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Size 12 Prom Dresses – School Formal Gowns | One Honey

Shop Australia's best selection of Size 12 Prom Dresses and school formal gowns at One Honey Boutique. Our curated edit of size 12 formal dresses is designed to celebrate your shape, flatter your figure, and make you feel incredible for your Year 10 or Year 12 formal.

We believe every girl deserves to shine – that’s why we offer the largest range of school formal dresses in AUS size 12, available in curve-flattering silhouettes, trending styles, and inclusive cuts you’ll actually feel comfortable in. Our gowns include mermaid fits, corset-backs, A-line skirts, sequin designs, backless cuts, and more.

Choose from designer labels and exclusive styles starting from just $99. We stock in-demand colours like emerald, black, pink, red, and champagne – all in stretch fabrics, boned bodices, or draped satin that enhances your natural shape.

Need to try it on? Visit our Gold Coast showroom for a one-on-one fitting, or try dresses virtually from home with our Virtual Try-On App.

Our Formal Dress Register ensures no one else at your school wears the same style. Each gown is tracked by event and school to keep your look exclusive.

With flexible payment options like AfterPay, ZipPay, and LayBuy, you can secure your dream dress today and pay it off over time. We ship express Australia-wide, so even last-minute shoppers can still slay their formal.

Need help choosing? Explore our Customer Gallery to see how real girls styled their size 12 prom looks – or contact us for personalised advice from our styling team.

At One Honey, we’re all about confidence, comfort, and curve-conscious fashion that lets you shine on your big night. Browse our full range of Size 12 school formal dresses and find the one today.

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✨ Find The One With Help From Our Expert Stylists at One Honey

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AUS SIZE 2 - 24TINA HOLLY COUTURE TW049 Emerald sequin mermaid gown with V front and low back, perfect school formal dress, Brisbane to Gold Coast.TINA HOLLY COUTURE TW049 Emerald sequin mermaid gown with low back, perfect school formal dress. Brisbane to Gold Coast, Australia.
Tina Holly Couture Designer TW049 Emerald Beaded Sequin Mermaid Formal Gown Sale priceFrom $695.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW005 Golden rust A-line formal dress with deep V-neckline and leg slit, Brisbane to Gold Coast
Tina Holly Couture TW005 Golden Rust Deep V-Neckline and A-line With A Leg Spilt Formal Dress Sale priceFrom $645.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW029 Smoke Shimmer Mermaid School Formal Dress, V Back, Thin Strap, Brisbane to Gold CoastTINA HOLLY COUTURE TW029 Smoke Shimmer V-Back Dress, Mermaid Formal Gown, Brisbane to Gold Coast, Australia
Tina Holly Couture TW029 Smoke Shimmer Mermaid Formal Dress Sale priceFrom $455.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW004 Wine Lace Up Satin School Formal Dress, Pocket Detail, Brisbane to Gold CoastTINA HOLLY COUTURE TW004 Wine Lace Up Back Satin Formal Gown with Leg Split, School Formal Dress, Brisbane to Gold Coast, Australia
Tina Holly Couture Designer TW004 Wine Lace Up Back Silky Satin Formal Gown Sale priceFrom $645.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW004 Ice Blue silky satin gown with lace-up back and leg slit, school formal dress, Brisbane to Gold Coast.TINA HOLLY COUTURE TW004 ice blue satin formal gown with lace-up back, perfect for school formals or weddings, Brisbane to Gold Coast
Tina Holly Couture Designer TW004 Ice Blue Lace Up Back Silky Satin Formal Gown Sale priceFrom $645.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW004 emerald silky satin gown, lace-up back, flowing skirt, formal dress, Brisbane to Gold Coast, AustraliaTINA HOLLY COUTURE TW004 emerald silky satin gown with lace-up back, formal dress perfect for school events or bridesmaids, Brisbane to Gold Coast.
Tina Holly Couture Designer TW004 Emerald Lace Up Back Silky Satin Formal Gown Sale priceFrom $645.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW004 Champagne satin gown, lace-up back, formal dress for prom or bridesmaid, Brisbane to Gold CoastTINA HOLLY COUTURE TW004 champagne silky satin gown with lace-up back, school formal dress, Brisbane to Gold Coast, Australia.
Tina Holly Couture Designer TW004 Champagne Lace Up Back Silky Satin Formal Gown Sale priceFrom $645.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW004 Golden rust satin school formal dress with lace-up back, Brisbane to Gold Coast, AustraliaTINA HOLLY COUTURE TW004 Golden Rust Satin School Formal Dress with Lace Up Back and Leg Split, Brisbane to Gold Coast
Tina Holly Couture Designer TW004 Golden Rust Lace Up Back Silky Satin Formal Gown Sale priceFrom $645.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW620 white beaded lace strapless A-line wedding dress, tea length, Brisbane to Gold Coast, Australia.TINA HOLLY COUTURE TW620 strapless beaded lace A-line wedding dress, tea length, Brisbane to Gold Coast, Australia
Tina Holly Couture TW620 White Beaded & Lace With A Strapless Neckline A-line Wedding Dress Sale priceFrom $645.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW005 Orchid V-Neckline A-line dress with leg slit, formal style, Brisbane to Gold Coast Australia
Tina Holly Couture TW005 Orchid Deep V-Neckline and A-line With A Leg Spilt Formal Dress Sale priceFrom $645.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW005 Indigo deep V-neckline formal dress with leg slit, elegant A-line design, perfect for school formals from Brisbane to Gold Coast.
Tina Holly Couture TW005 Indigo Deep V-Neckline and A-line With A Leg Spilt Formal Dress Sale priceFrom $645.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW005 Wine Deep V-Neckline A-line Dress with Leg Split, Formal Style, Brisbane to Gold Coast
Tina Holly Couture TW005 Wine Deep V-Neckline and A-line With A Leg Spilt Formal Dress Sale priceFrom $645.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW005 Red A-line Formal Dress with Deep V-Neckline and Leg Split, Prom Gown Brisbane to Gold Coast
Tina Holly Couture TW005 Red Deep V-Neckline and A-line With A Leg Spilt Formal Dress Sale priceFrom $645.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW005 pastel blue formal dress with deep V-neckline and leg slit, perfect for prom. Brisbane to Gold Coast, Australia.TINA HOLLY COUTURE TW005 Pastel Blue Deep V-Neckline A-line Formal Dress with Leg Split, School Formal Dress, Brisbane to Gold Coast
Tina Holly Couture TW005 Pastel Blue Deep V-Neckline and A-line With A Leg Spilt Formal Dress Sale priceFrom $645.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW420 Emerald Green Deep V-Neck A-line dress with leg slit, formal gown, Brisbane to Gold Coast, AustraliaTINA HOLLY COUTURE TW420 Sparkling Emerald A-line Dress with Deep V-Neck and Leg Split, Formal Gown Brisbane to Gold Coast
Tina Holly Couture TW420 Emerald Green Deep V-Neckline and A-line With A Leg Spilt Formal Dress Sale priceFrom $679.95 AUD
Color
USA SIZE 2 - 20Sold outHoney Couture MONAE Blue Metallic Colour Change Formal DressHoney Couture MONAE Blue Metallic Colour Change Formal Dress
Honey Couture MONAE Blue Metallic Colour Change Formal Dress Sale priceFrom $649.95 AUD
Color
AUS SIZE 6 - 16Woman wearing Honey Couture DITA Black Lace Up Corset Mermaid Formal Dress, Australian Designer, Prom Dresses, Evening GownModel wearing Honey Couture DITA black lace up corset mermaid formal dress, ideal for prom and evening events by Australian designer.
Honey Couture DITA Black Lace Up Corset Mermaid Formal Dress Sale price$459.95 AUD
Color
AUS SIZE 6 - 16Sold outWoman wearing Honey Couture DITA Copper Gold Lace Up Corset Mermaid Formal Dress, Australian Designer evening gown, in a well-lit room.Woman wearing Honey Couture DITA Copper Gold Lace Up Corset Mermaid Formal Dress in Australian boutique, perfect for prom or evening events.
Honey Couture DITA Copper Gold Lace Up Corset Mermaid Formal Dress Sale price$459.95 AUD
Color
USA SIZE XS - XLSold outBack view of model wearing Honey Couture VERA emerald green & black tie-up formal dress designed by Australian label. Prom and evening gown.Two women wearing elegant formal gowns, one in a black and blue peacock design and the other in a teal gown, in a fashion showroom.
Honey Couture VERA Emerald Green & Black Tie Up Formal Dress Sale price$299.95 AUD
Color
USA SIZE 4 - 16Sold outHoney Couture GLIMMER Black & Gold Sequin Glitter Formal DressHoney Couture GLIMMER Black & Gold Sequin Glitter Formal Dress
Honey Couture GLIMMER Black & Gold Sequin Glitter Formal Dress Sale priceFrom $729.95 AUD
Color
USA SIZE 2 - 18Honey Couture ASTRA off-white strapless corset bridal overskirt dress - Australian designer, prom evening gown, affordable elegance.Two women in elegant Honey Couture evening gowns, featuring a strapless lace corset and a satin backless dress, showcasing Australian designer fashion.
Honey Couture ASTRA Off White Strapless Corset Bridal Overskirt Formal Dress Sale priceFrom $899.95 AUD
Color
USA SIZE 4 - 18Sold outHoney Couture POLLY Royal Blue Glitter Shimmer Strapless Ballgown Formal DressHoney Couture POLLY Royal Blue Glitter Strapless Ballgown by Australian Designer, perfect for prom and evening events, affordable elegance.
Honey Couture POLLY Royal Blue Glitter Shimmer Strapless Ballgown Formal Dress Sale priceFrom $799.95 AUD
Color
USA SIZE 4 - 18Sold outHoney Couture POLLY Midnight Blue Glitter Shimmer Strapless Ballgown Formal DressHoney Couture POLLY Midnight Blue Glitter Shimmer Strapless Ballgown Formal Dress
Honey Couture POLLY Midnight Blue Glitter Shimmer Strapless Ballgown Formal Dress Sale priceFrom $799.95 AUD
Color
USA SIZE XS - XLSold outHoney Couture CIENNA White Silver & Black Lace Up Mermaid Formal DressHoney Couture CIENNA White Silver & Black Lace Up Mermaid Formal Dress
Honey Couture CIENNA White Silver & Black Lace Up Mermaid Formal Dress Sale price$549.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW420 Plum Deep V-Neckline A-line Dress with High Leg Split, Prom Gown, Brisbane to Gold Coast, Australia
Tina Holly Couture TW420 Plum Deep V-Neckline and A-line With A Leg Spilt Formal Dress Sale priceFrom $679.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW420 Metallic Rose Deep V-Neck Formal Dress with High Leg Slit, Brisbane to Gold Coast, Australia
Tina Holly Couture TW420 Metallic Rose Deep V-Neckline and A-line With A Leg Spilt Formal Dress Sale priceFrom $679.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW420 Berry Deep V-Neckline A-line dress with high leg slit, formal gown, Brisbane to Gold Coast, Australia
Tina Holly Couture TW420 Berry Deep V-Neckline and A-line With A Leg Spilt Formal Dress Sale priceFrom $679.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW420 Indigo deep V-neckline A-line dress with leg split, school formal dress, Brisbane to Gold Coast Australia.TINA HOLLY COUTURE TW420 Indigo dress with deep V-neckline, high leg slit, prom gown, Brisbane to Gold Coast
Tina Holly Couture TW420 Indigo Deep V-Neckline and A-line With A Leg Spilt Formal Dress Sale priceFrom $679.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW325 Ruby Red A-line formal dress with lace-up back and high leg slit, prom gown. Brisbane to Gold Coast.
Tina Holly Couture TW325 Ruby Red Apron Neckline and A Lace-Up Back With A-line Formal Dress Sale priceFrom $749.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW325 turquoise A-line dress with apron neckline, metallic star pattern, lace-up back; Brisbane to Gold CoastTINA HOLLY COUTURE TW325 turquoise A-line dress with high leg slit, lace-up back, Brisbane to Gold Coast, Australia
Tina Holly Couture TW325 Turquoise Apron Neckline and A Lace-Up Back With A-line Formal Dress Sale priceFrom $749.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW325 lace-up A-line evening dress with apron neckline and metallic stars, perfect for Brisbane to Gold Coast.
Tina Holly Couture TW325 Wisteria Apron Neckline and A Lace-Up Back With A-line Formal Dress Sale priceFrom $749.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW325 emerald green A-line dress with lace-up back and high leg slit, school formal dress, Brisbane to Gold Coast.TINA HOLLY COUTURE TW325 Emerald satin formal dress with leg slit, lace-up back. School formal from Brisbane to Gold Coast, Australia.
Tina Holly Couture TW325 Emerald Green Apron Neckline and A Lace-Up Back With A-line Formal Dress Sale priceFrom $749.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW070 Pearl Pink deep V A-line formal dress, shimmering fabric with a flowing skirt, Brisbane to Gold Coast.TINA HOLLY COUTURE TW070 Pearl Pink Deep V Backless A-line Dress with Metallic Stars, formal gown Brisbane to Gold Coast
Tina Holly Couture TW070 Pearl Pink Deep V Front Fitted Bodice With A-line Formal Dress Sale priceFrom $699.95 AUD
Color
USA SIZE 4 - 16Sold outHoney Couture NOELLA Black Glitter Tulle Bustier Formal DressHoney Couture NOELLA Black Glitter Tulle Bustier Formal Dress
Honey Couture NOELLA Black Glitter Tulle Bustier Formal Dress Sale price$659.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW070 Metal Purple A-line dress with deep V front and open back, featuring metallic stars. Brisbane to Gold Coast.TINA HOLLY COUTURE TW070 metallic star A-line formal dress with deep V open back, perfect for prom or formal events, Brisbane to Gold Coast
Tina Holly Couture TW070 Metal Purple Deep V Front Fitted Bodice With A-line Formal Dress Sale priceFrom $699.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW019 Strapless Sequin Thigh Slit Formal Dress, Brisbane to Gold Coast
Tina Holly Couture TW019 Green & Nude Strapless Sequin With Scoop Neckline Formal Dress Sale priceFrom $645.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW019 Berry Strapless Sequin Formal Dress with Thigh High Slit, School Formal Dress Brisbane to Gold Coast, Australia
Tina Holly Couture TW019 Berry & Nude Strapless Sequin With Scoop Neckline Formal Dress Sale priceFrom $645.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TW019 Strapless Sequin Formal Dress with Thigh High Slit, Prom Gown, Brisbane to Gold Coast, AustraliaTINA HOLLY COUTURE TW019 strapless sequin formal dress with thigh-high slit, perfect for prom or formal events. Brisbane to Gold Coast.
Tina Holly Couture TW019 Navy & Nude Strapless Sequin With Scoop Neckline Formal Dress Sale priceFrom $645.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TK333 red formal dress with ruched puff sleeve and side slit, perfect for school formals, Brisbane to Gold Coast.TINA HOLLY COUTURE TK333 Ruby Red gown with asymmetrical neckline and long train, formal dress for events, Brisbane to Gold Coast, Australia
Tina Holly Couture TK333 Ruby Red With Asymmetrical Neckline And A Side Slit Formal Dress Sale priceFrom $899.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TK333 mauve pink formal dress with asymmetrical neckline and side slit, puff sleeve elegance, Brisbane to Gold Coast.Tina Holly Couture TK333 mauve pink satin formal dress, asymmetrical neckline, puff sleeves, school formal gown, Brisbane to Gold Coast.
Tina Holly Couture TK333 Mauve Pink With Asymmetrical Neckline And A Side Slit Formal Dress Sale priceFrom $899.95 AUD
Color
AUS SIZE 2 - 24TINA HOLLY COUTURE TK121 White & Nude wedding dress with V front mesh inset and leg slit, fitted style, Brisbane to Gold Coast, AustraliaTINA HOLLY COUTURE TK121 floral lace fitted wedding dress with nude backing, bridal elegance Brisbane to Gold Coast
Tina Holly Couture TK121 White & Nude Fitted Leg Spilt Wedding Dress Sale priceFrom $619.95 AUD
Color
USA SIZE XS - 3XLHoney Couture MIREN Emerald Green Lace Applique Mermaid Formal DressHoney Couture MIREN Emerald Green Lace Applique Mermaid Formal Dress
Honey Couture MIREN Emerald Green Lace Applique Mermaid Formal Dress Sale priceFrom $599.95 AUD
Color
USA SIZE 2 - 16Sold outHoney Couture ASPEN Mint Green Lace Beaded Applique Chiffon Formal DressHoney Couture ASPEN Mint Green Lace Beaded Applique Chiffon Formal Dress
Honey Couture ASPEN Mint Green Lace Beaded Applique Chiffon Formal Dress Sale price$629.95 AUD
Color
USA SIZE 2 - 16Sold outHoney Couture MUSE Silver Glitter Sequin Feather Formal DressHoney Couture MUSE Silver Glitter Sequin Feather Formal Dress
Honey Couture MUSE Silver Glitter Sequin Feather Formal Dress Sale price$829.95 AUD
Color
USA SIZE 4 - 16Sold outTwo models in Honey Couture SOPHIE Navy Blue Satin Beaded Bustier Formal Dresses, featuring mermaid train and leg split, by an Australian Designer.Model wearing Honey Couture SOPHIE Navy Blue Beaded Bustier Formal Dress, an Australian Designer evening gown with mermaid train and side sash.
Honey Couture SOPHIE Navy Blue Satin Beaded Bustier Formal Dress Sale price$629.95 AUD
Color
USA SIZE 4 - 16Sold outHoney Couture QUINN Off White Satin Lace Up Formal Dress with leg split and mermaid train, perfect for prom or evening events by Australian Designer.Honey Couture QUINN baby blue satin lace-up formal dress with mermaid train, perfect for prom or evening events by Australian designer.
Honey Couture QUINN Off White Satin Lace Up Formal Dress Sale price$569.95 AUD
Color
USA SIZE XS - XLHoney Couture ROSIE Champagne Gold Off Shoulder Beaded Tulle Formal DressHoney Couture ROSIE Champagne Gold Off Shoulder Beaded Tulle Formal Dress
Honey Couture ROSIE Champagne Gold Off Shoulder Beaded Tulle Formal Dress Sale price$699.95 AUD
Color
USA SIZE S - LSold outHoney Couture MARI Green Shimmer Lace Back Formal Dress - Australian Designer Prom Evening GownHoney Couture MARI Green Shimmer Lace Formal Dress with Mermaid Train and Leg Split, designed by Australian Designer, ideal for proms.
Honey Couture MARI Green Shimmer Lace Back Bum Ruching Formal Dress Sale price$499.95 AUD
Color

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Frequently Asked Questions

Size 12 Prom Dresses

Need help with your order or planning ahead for formal season? Browse our Help Centre for answers about sizing, shipping, returns, and our Dress Registration policy.

📅 New to formal shopping? Read our How to Order Your Formal Dress guide for timelines, made-to-order info, and tips to avoid last-minute stress.

💸 Shop Sale Gowns from $99

🏬 Visit our Gold Coast Showroom

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Still unsure? Contact Us — our friendly team is here to help you shine ✨