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Long Formal Dresses Australia – Prom & Evening Gowns

Shop long formal dresses Australia loves — discover elegant floor-length prom gowns, school formal dresses & statement eveningwear from leading Australian & international designers.

Explore long formal gowns for Year 10, Year 11 & Year 12 formals, prom, graduations, balls, black-tie events & special occasions across fitted, flowing & statement silhouettes.

From sleek satin & sculpted corsets to dramatic mermaid gowns, romantic A-line skirts & sparkling embellishment, discover a floor-length formal dress made for your moment.

Explore Long Formal Dresses

Searching for long formal dresses in Australia? One Honey Boutique curates designer floor-length formal gowns, prom dresses, school formal dresses & eveningwear for unforgettable events.

A long formal dress creates an elevated silhouette for Year 10, Year 11 & Year 12 formals, prom, graduation, university balls, galas, black-tie events, weddings & milestone celebrations.

Explore long formal gowns across fitted, mermaid, A-line, corset, strapless, backless & flowing silhouettes, with selected styles featuring satin, sequins, glitter, crystals, beading, tulle & statement embellishment.

Love a fitted floor-length silhouette? Explore our fitted formal dresses, or browse our mermaid formal dresses for sculpted gowns with dramatic skirts.

Prefer a romantic flowing gown? Discover our A-line formal dresses for elegant silhouettes, or explore our tulle formal dresses for soft layers, movement & volume.

Love a structured bodice? Browse our corset formal dresses for sculpted bodices & defined waists, or explore our strapless formal dresses for statement neckline styles.

Looking for movement & drama? Explore our leg split formal dresses for long gowns featuring statement thigh-high & side splits.

Prefer a luxe finish? Discover our satin formal dresses for smooth, luminous gowns, or browse our sequin formal dresses for high-impact sparkle.

Looking for something shorter? Explore our midi formal dresses & short formal dresses to shop formalwear by length.

Shopping for a school formal? Explore our school formal dresses Australia collection for designer Year 10, Year 11 & Year 12 gowns across colours, silhouettes & finishes.

One Honey is home to Australia's largest Dress Register, helping participating school formal customers reduce the chance of another registered One Honey customer from the same school selecting the same dress for their event.

Selected One Honey styles also offer Virtual Try-On, helping you visualise eligible long formal dresses & available colours as part of your online shopping experience before choosing your gown.

Need extended sizing? Explore our plus size formal dresses Australia collection for curve formal gowns & selected designer styles across extended size ranges.

For our complete national formalwear edit, browse formal dresses Australia for designer prom, school formal & evening dresses across lengths, colours, silhouettes & designers.

Complete your formal look with our clutch bags, formal jewellery & formal accessories.

Proudly Australian owned & trusted since 2011 with over 1,000+ 5-star reviews, One Honey Boutique is a trusted Australian destination for designer prom, school formal & occasion gowns.

Shop long formal dresses online with flexible payment options including Afterpay & Zip, with delivery available throughout Australia.

Need help choosing your size, checking availability or ordering for a fixed event date? Visit our Help Centre for sizing, availability & delivery support.

Make an unforgettable entrance — discover long formal dresses, floor-length prom gowns & designer eveningwear at One Honey Boutique.

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1628 products

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USA SIZE S - LDISCONTINUED FINAL SIZES AVAILABLEBEAU Tulle A - Line Semi Formal Dress in Australia | One Honey Boutique
BEAU Tulle A-Line Semi Formal Dress Sale price$259.95 AUD
Color
USA SIZE XS - 3XLDISCONTINUED FINAL SIZES AVAILABLELIZZO Strapless Velvet Mermaid Formal Dress with Gloves in Australia | One Honey Boutique
LIZZO Strapless Velvet Mermaid Formal Dress with Gloves Sale priceFrom $569.95 AUD
Color
USA SIZE 4 -16PRETORIA One Shoulder Satin Gown with Sash in Australia | One Honey Boutique
PRETORIA One Shoulder Satin Gown with Sash Sale price$429.95 AUD
Color
USA SIZE 2 - 14DISCONTINUED FINAL SIZES AVAILABLEBALENCI - USSY Mermaid Formal Dress w Gloves in Australia | One Honey Boutique
BALENCI-USSY Mermaid Formal Dress w Gloves Sale priceFrom $569.95 AUD
Color
USA SIZE 2 - 18JASMINA One Shoulder Satin A Line Bridesmaid Dress in Australia | One Honey Boutique
JASMINA One Shoulder Satin A Line Bridesmaid Dress Sale priceFrom $429.95 AUD
Color
VISIT OUR GOLD COAST STORE TO TRY ONUSA SIZE 2 - 18TIFFANY Strapless Satin Bridesmaid Semi Formal Dress with Sash in Australia | One Honey Boutique
TIFFANY Strapless Satin Bridesmaid Semi Formal Dress with Sash Sale priceFrom $429.95 AUD
Color
USA SIZE 2 - 24ALENA Tie Strap A - Line Floral Printed Bridesmaid Dress in Australia | One Honey Boutique
ALENA Tie Strap A-Line Floral Printed Bridesmaid Dress Sale priceFrom $399.95 AUD
Color
USA SIZE 2 - 16DISCONTINUED FINAL SIZES AVAILABLEIN STOCK FOR IMMEDIATE SHIPPINGFELIX Off Shoulder Silky Bridesmaid Semi Formal Dress in Australia | One Honey Boutique
FELIX Off Shoulder Silky Bridesmaid Semi Formal Dress Sale price$459.95 AUD
Color
USA SIZE 2 - 16KAILA Off Shoulder Silky Bridesmaid Semi Formal Dress in Australia | One Honey Boutique
KAILA Off Shoulder Silky Bridesmaid Semi Formal Dress Sale price$479.95 AUD
Color
DISCONTINUED FINAL SIZES AVAILABLEUSA SIZE 2 - 16LAILA Off Shoulder Silky Bridesmaid Semi Formal Dress in Australia | One Honey Boutique
LAILA Off Shoulder Silky Bridesmaid Semi Formal Dress Sale priceFrom $459.95 AUD
Color
USA SIZE 2 - 16DISCONTINUED FINAL SIZES AVAILABLEIN STOCK FOR IMMEDIATE SHIPPINGESME Cowl Neck Silky Bridesmaid Semi Formal Dress in Australia | One Honey Boutique
ESME Cowl Neck Silky Bridesmaid Semi Formal Dress Sale price$459.95 AUD
Color
USA SIZE 0 - 16On saleAMARA Satin Diamanté Detail Off The Shoulder Formal Dress in Australia | One Honey Boutique
AMARA Satin Diamanté Detail Off The Shoulder Formal Dress Sale priceFrom $370.95 AUD Regular price$529.95 AUD
Color
USA SIZE XS - LLYRICAL Satin Draped Feature Semi Formal Dress in Australia | One Honey Boutique
LYRICAL Satin Draped Feature Semi Formal Dress Sale price$259.95 AUD
Color
DISCONTINUED FINAL SIZES AVAILABLEUSA SIZE 2 - 14DELIA Silky Bustier Corset Mermaid Formal Gown Dress in Australia | One Honey Boutique
DELIA Silky Bustier Corset Mermaid Formal Gown Dress Sale priceFrom $479.95 AUD
Color
USA SIZE 2 - 16SUZANA Lace & Tulle Applique Trumpet Mermaid Dress in Australia | One Honey Boutique
SUZANA Lace & Tulle Applique Trumpet Mermaid Dress Sale price$929.95 AUD
Color
USA SIZE 2 - 16RITTA Embellished Bustier Satin Prom & Formal Dress in Australia | One Honey Boutique
RITTA Embellished Bustier Satin Prom & Formal Dress Sale priceFrom $699.95 AUD
Color
USA SIZE XS - 2XLDISCONTINUED FINAL SIZES AVAILABLEIN STOCK FOR IMMEDIATE SHIPPINGDEVINA Sequin Low Back Corset Lace Up Formal Dress in Australia | One Honey Boutique
DEVINA Sequin Low Back Corset Lace Up Formal Dress Sale price$729.95 AUD
Color
USA SIZE XS - XLDISCONTINUED FINAL SIZES AVAILABLEIN STOCK FOR IMMEDIATE SHIPPINGBLOOM Bustier Lace Applique Romantic Tulle Formal Dress in Australia | One Honey Boutique
BLOOM Bustier Lace Applique Romantic Tulle Formal Dress Sale price$829.95 AUD
Color
USA SIZE XS - LDISCONTINUED FINAL SIZES AVAILABLEJENNA Silky Tie Back Semi Formal Prom Dress in Australia | One Honey Boutique
JENNA Silky Tie Back Semi Formal Prom Dress Sale price$399.95 AUD
Color
USA SIZE XS - 3XLDISCONTINUED FINAL SIZES AVAILABLEIN STOCK FOR IMMEDIATE SHIPPINGAMORET Romantic Beaded Applique Tulle Prom & Formal Dress in Australia | One Honey Boutique
AMORET Romantic Beaded Applique Tulle Prom & Formal Dress Sale priceFrom $799.95 AUD
Color
IN STOCKDISCONTINUEDSALEOn saleKAY Silky A Line Bridesmaid Semi Formal Dress in Australia | One Honey Boutique
KAY Silky A Line Bridesmaid Semi Formal Dress Sale priceFrom $440.95 AUD Regular price$629.95 AUD
Color
VISIT OUR GOLD COAST STORE TO TRY ONDISCONTINUED FINAL SIZES AVAILABLEUSA SIZE 2 - 24On saleROBIN Silky Off Shoulder Formal Bridesmaid Dress in Australia | One Honey Boutique
ROBIN Silky Off Shoulder Formal Bridesmaid Dress Sale priceFrom $321.97 AUD Regular price$459.95 AUD
Color
VISIT OUR GOLD COAST STORE TO TRY ONUSA SIZE 2 - 18DISCONTINUEDAPHRODITE Embellished Corset Satin Mermaid Formal Dress in Australia | One Honey Boutique
APHRODITE Embellished Corset Satin Mermaid Formal Dress Sale price$789.95 AUD
Color
VISIT OUR GOLD COAST STORE TO TRY ONUSA SIZE 4 - 16ELOISE Ruched Leg Split Silky Bridesmaid Semi Formal Dress in Australia | One Honey Boutique
ELOISE Ruched Leg Split Silky Bridesmaid Semi Formal Dress Sale price$459.95 AUD
Color
DISCONTINUEDUSA 2-16Save 0%TALEAH Cowl Neck Tie Back Silky Bridesmaid Semi Formal Dress in Australia | One Honey Boutique
TALEAH Cowl Neck Tie Back Silky Bridesmaid Semi Formal Dress Sale priceFrom $370.95 AUD Regular price$529.95 AUD
Color
USA SIZE 2 - 16AURA Off the Shoulder Silky A Line Bridesmaid Formal Dress in Australia | One Honey Boutique
AURA Off the Shoulder Silky A Line Bridesmaid Formal Dress Sale priceFrom $429.95 AUD
Color
USA SIZE 2 - 16DISCONTINUED FINAL SIZES AVAILABLEMISTELLA Shimmer Glitter Low Back Corset Feature Mermaid Formal Gown in Australia | One Honey Boutique
MISTELLA Shimmer Glitter Low Back Corset Feature Mermaid Formal Gown Sale priceFrom $569.95 AUD
Color
DISCONTINUED FINAL SIZES AVAILABLEUSA SIZE 2 - 14TARA Silky Ruched Bodice Mermaid Formal Gown in Australia | One Honey Boutique
TARA Silky Ruched Bodice Mermaid Formal Gown Sale priceFrom $549.95 AUD
Color
DISCONTINUED FINAL SIZES AVAILABLEUSA SIZE 2 - 20INDRA Beaded Bustier Corset Ruched Formal Gown Dress in Australia | One Honey Boutique
INDRA Beaded Bustier Corset Ruched Formal Gown Dress Sale priceFrom $569.95 AUD
Color
DISCONTINUEDUSA 4-26On saleSOLANA Embellished Corset Satin Mermaid Formal Dress in Australia | One Honey Boutique
SOLANA Embellished Corset Satin Mermaid Formal Dress Sale priceFrom $440.95 AUD Regular price$629.95 AUD
Color
DISCONTINUED FINAL SIZES AVAILABLEUSA SIZE 2 - 20RIRI Beaded Silky Corset Ruched Formal Gown Dress in Australia | One Honey Boutique
RIRI Beaded Silky Corset Ruched Formal Gown Dress Sale priceFrom $659.95 AUD
Color
DISCONTINUED FINAL SIZES AVAILABLEIN STOCK FOR IMMEDIATE SHIPPINGUSA SIZE 2 - 18ELVIRA Strapless Silky Embellished Corset Mermaid Formal Dress in Australia | One Honey Boutique
ELVIRA Strapless Silky Embellished Corset Mermaid Formal Dress Sale priceFrom $729.95 AUD
Color
USA SIZE 2 - 14DISCONTINUED FINAL SIZES AVAILABLEJESIKA Glitter Strapless Mermaid Dress with Gloves in Australia | One Honey Boutique
JESIKA Glitter Strapless Mermaid Dress with Gloves Sale priceFrom $569.95 AUD
Color
IN STOCKDISCONTINUEDSALEOn saleROSALIA Silky A Line Formal & Prom Dress in Australia | One Honey Boutique
ROSALIA Silky A Line Formal & Prom Dress Sale priceFrom $384.95 AUD Regular price$549.95 AUD
Color
USA SIZE 2 - 14ONE HONEY EXCLUSIVEHoney Couture KAT Satin Beaded Detail Corset Bustier Formal Dress in Australia | One Honey Boutique
Honey Couture KAT Satin Beaded Detail Corset Bustier Formal Dress Sale priceFrom $549.95 AUD
Color
USA SIZE XS - LELODIE Silky Lace Up Low Back Semi Formal Dress in Australia | One Honey Boutique
ELODIE Silky Lace Up Low Back Semi Formal Dress Sale price$429.95 AUD
Color
VISIT OUR GOLD COAST STORE TO TRY ONDISCONTINUED FINAL SIZES AVAILABLEUSA SIZE 6 - 24Save 50%HARPER Shimmer Glitter Off The Shoulder Corset Formal Gown in Australia | One Honey Boutique
HARPER Shimmer Glitter Off The Shoulder Corset Formal Gown Sale priceFrom $249.98 AUD Regular price$499.95 AUD
Black
USA SIZE S - 2XLDISCONTINUEDSTELLA Shimmer Glitter Fabric Mermaid Semi Formal Dress in Australia | One Honey Boutique
STELLA Shimmer Glitter Fabric Mermaid Semi Formal Dress Sale price$429.95 AUD
Color
USA SIZE XS - 3XLDISCONTINUED FINAL SIZES AVAILABLECAMPBELL Sequin Strapless Corset Mermaid Evening Gown Dress in Australia | One Honey Boutique
CAMPBELL Sequin Strapless Corset Mermaid Evening Gown Dress Sale priceFrom $599.95 AUD
Color
USA SIZE XS - 4XLSOVIA Off Shoulder Beaded Corset Mermaid Prom & Formal Dress in Australia | One Honey Boutique
SOVIA Off Shoulder Beaded Corset Mermaid Prom & Formal Dress Sale priceFrom $799.95 AUD
Color
USA SIZE 2 - 12DISCONTINUED FINAL SIZES AVAILABLEDREAM Sequin Glitter Fishtail Mermaid Formal Dress in Australia | One Honey Boutique
DREAM Sequin Glitter Fishtail Mermaid Formal Dress Sale priceFrom $799.95 AUD
Color
USA SIZE 2 - 16DISCONTINUED FINAL SIZES AVAILABLEREYA Tulle Corset Back Romantic A Line Formal Dress in Australia | One Honey Boutique
REYA Tulle Corset Back Romantic A Line Formal Dress Sale priceFrom $859.95 AUD
Color
USA SIZE 2XS - 2XLDISCONTINUEDNORMA Sequin Hidden Corset Mermaid Prom & Formal Dress in Australia | One Honey Boutique
NORMA Sequin Hidden Corset Mermaid Prom & Formal Dress Sale priceFrom $759.95 AUD
Color
DISCONTINUED FINAL SIZES AVAILABLEMIONA Corset Zip Back Mermaid Leg Split Prom Dress in Australia | One Honey Boutique
MIONA Corset Zip Back Mermaid Leg Split Prom Dress Sale price$985.95 AUD
Color
USA SIZE 2 - 14DISCONTINUED FINAL SIZES AVAILABLEHoney Couture PORTAFINA Floral A Line Formal Dress in Australia | One Honey Boutique
Honey Couture PORTAFINA Floral A Line Formal Dress Sale priceFrom $859.95 AUD
Color
ONLINE EXCLUSIVEUSA SIZE 2 - 16KATARINA Off the Shoulder A - Line Tulle Romantic Prom Dress in Australia | One Honey Boutique
KATARINA Off the Shoulder A-Line Tulle Romantic Prom Dress Sale price$1,100.95 AUD
Color
ONLINE EXCLUSIVEUSA SIZE 2 - 16ROSA Rose Printed A - Line Organza Prom & Formal Dress in Australia | One Honey Boutique
ROSA Rose Printed A-Line Organza Prom & Formal Dress Sale price$1,099.00 AUD
Color
ONLINE EXCLUSIVEUSA SIZE 0 - 14ANA Lace & Tulle A - Line Prom & Formal Dress in Australia | One Honey Boutique
ANA Lace & Tulle A-Line Prom & Formal Dress Sale priceFrom $699.95 AUD
Color

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Long Formal Dresses Australia

✨ NEED HELP CHOOSING YOUR DRESS? ✨

Need help with sizing, delivery, ordering or planning for your event? Visit our Help Centre to shop with confidence — explore sizing & fit advice, ordering guides, Dress Registration, Virtual Try-On, customer resources & more.

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Australia’s Highest-Rated Formalwear Boutique

1000+ verified Google reviews • Rated 4.9 ★