21st Birthday Dresses

    • Hayden Long Sleeve Plunge Mini Dress - Black
    Preferred Fibres

    Hayden

    Long Sleeve Plunge Mini Dress - Black

    £69
    -39% Off £42
    Preferred Fibres
    • Mariposa Slinky Halter Mini Dress - Red

    Mariposa

    Slinky Halter Mini Dress - Red

    £85
    -40% Off £51
    • Adrienne One Shoulder Mesh Mini Dress - Polka Dot

    Adrienne

    One Shoulder Mesh Mini Dress - Polka Dot

    £89
    -39% Off £54
    • Paulina Velvet Strapless Mini Dress - Wine

    Paulina

    Velvet Strapless Mini Dress - Wine

    £79
    -44% Off £44
    • Darius Diamante Cowl Mini Dress - Silver

    Darius

    Diamante Cowl Mini Dress - Silver

    £119
    -45% Off £66
    • Hayden Long Sleeve Plunge Mini Dress - Burgundy
    Preferred Fibres

    Hayden

    Long Sleeve Plunge Mini Dress - Burgundy

    £69
    -39% Off £42
    Preferred Fibres
    • Darius Diamante Cowl Mini Dress - Wine

    Darius

    Diamante Cowl Mini Dress - Wine

    £119
    -45% Off £66
    • Diana Off Shoulders Mini Dress - Powder Baby Blue

    Diana

    Off Shoulders Mini Dress - Powder Baby Blue

    £145
    -55% Off £65
    • Cressida Crepe Halter Mini Dress - Black

    Cressida

    Crepe Halter Mini Dress - Black

    £89
    -39% Off £54
    • Christina Cross Over Mini Dress - Black

    Christina

    Cross Over Mini Dress - Black

    £95
    -40% Off £57
    • Maryk Mesh Mini Dress - Khaki

    Maryk

    Mesh Mini Dress - Khaki

    £49
    -41% Off £29
    • Ambrosi Satin Chiffon Mini Dress - Black

    Ambrosi

    Satin Chiffon Mini Dress - Black

    £109
    -63% Off £40
    • Ayana Cross Back Mini Dress - Velvet Burnout

    Ayana

    Cross Back Mini Dress - Velvet Burnout

    £95
    • Alba Bubble Mini Dress - Cornflower Blue

    Alba

    Bubble Mini Dress - Cornflower Blue

    £159
    -56% Off £70
    • Queenie Halter Bubble Mini Dress - Black/White

    Queenie

    Halter Bubble Mini Dress - Black/White

    £109
    -68% Off £35
    • Malakhai Chiffon Halter Mini Dress - Ombre Pink

    Malakhai

    Chiffon Halter Mini Dress - Ombre Pink

    £99
    -44% Off £55

    Kaida

    Slinky Maxi Dress With Hardware - Burnt Orange

    £95
    -49% Off £48
    • Adoria Sequin Cut Out Maxi Dress - Silver

    Adoria

    Sequin Cut Out Maxi Dress - Silver

    £119
    -50% Off £60
    • Kenny Diamante One Shoulder Maxi Dress - Gold

    Kenny

    Diamante One Shoulder Maxi Dress - Gold

    £179
    -44% Off £100
    • Roisin Diamante Maxi Dress - Mahogany

    Roisin

    Diamante Maxi Dress - Mahogany

    £195
    -30% Off £137
    • Eileen Mini Dress - White

    Eileen

    Mini Dress - White

    £125
    -56% Off £55
    • Mariposa Slinky Halter Mini Dress - Ivory

    Mariposa

    Slinky Halter Mini Dress - Ivory

    £85
    -45% Off £47

    Adoria

    Sequin Cut Out Maxi Dress - Pale Pink

    £119
    -52% Off £57
    • Caspian Slinky And Mesh Off Shoulder Mini Dress - Pale Pink
    Preferred Fibres

    Caspian

    Slinky And Mesh Off Shoulder Mini Dress - Pale Pink

    £75
    -44% Off £42
    Preferred Fibres
    • Oria Chiffon Mini Dress - Black

    Oria

    Chiffon Mini Dress - Black

    £89
    -44% Off £50
    • Brock Knit Halter Maxi Dress - Baby Pink

    Brock

    Knit Halter Maxi Dress - Baby Pink

    £79
    -44% Off £44
    • Rita Satin Mini Dress With Bow Sleeves - Black

    Rita

    Satin Mini Dress With Bow Sleeves - Black

    £119
    -62% Off £45
    • Tessa Structured Mini Dress - White

    Tessa

    Structured Mini Dress - White

    £165
    -55% Off £75
    • Maryam Tulle Bow Mini Dress - White

    Maryam

    Tulle Bow Mini Dress - White

    £139
    -53% Off £66
    • Giovanna Off Shoulder Mini Dress - Sonia Rose Print

    Giovanna

    Off Shoulder Mini Dress - Sonia Rose Print

    £139
    -53% Off £65
    • Franka Strapless Bow Mini Dress - White

    Franka

    Strapless Bow Mini Dress - White

    £209
    -55% Off £95
    • Astraeus Beaded Cowl Mini Dress - Desert Red

    Astraeus

    Beaded Cowl Mini Dress - Desert Red

    £85
    -40% Off £51
    • Jianna Strapless Mesh Mini Dress - Powder Pink

    Jianna

    Strapless Mesh Mini Dress - Powder Pink

    £69
    -45% Off £38
    • Sinead Slinky Mini Dress With Hardware - Mocha

    Sinead

    Slinky Mini Dress With Hardware - Mocha

    £95
    -40% Off £57
    • Ruby Halter Mini Dress - White

    Ruby

    Halter Mini Dress - White

    £99
    -55% Off £45
    • Giulia Chiffon Draped Mini Dress - Raspberry

    Giulia

    Chiffon Draped Mini Dress - Raspberry

    £129
    -60% Off £52

It’s your birthday and that means you deserve party gown perfection and we’re here to make sure you absolutely steal the spotlight for your 21st. Whether you want to stun in a sleek satin maxi dress or show your legs off in a hot mini with strategic cutouts and diamante detailing, we’ve got designer options for you. Browse our carefully curated catalogue of exclusive pieces to find the birthday party dress of your dreams.

Find Youre Dream 21st Birthday Dress 

If there was ever an occasion to absolutely serve some visuals, your 21st birthday would be it. You’re the star of the event — and your outfit absolutely needs to convey that. That’s why our edit of 21st birthday dresses come in different styles, fabrics, silhouettes, and designs. Whether it be black birthday dresses or sequined, you need to pick one that’s both effortlessly gorgeous and super comfortable. After all, you’re going to be partying from dusk ‘til dawn.

Finding the Perfect Birthday Dress for your 21st

Versatility and variety are key when choosing a birthday outfit. It’s always good to have a vision of what you want to look like but a bit of flexibility can work wonders. It’s not unusual to be inspired or influenced when browsing different styles. Timeless pieces in beiges, trendy fits in neutrals, or cool jewel tones. Start with a general idea of your ideal birthday dress — sleeveless minis, tube-top midis, long line gowns, bodycon maxis — and then dive in. Let the outfit inspo happen as you look through the different options in our edit.

Shop 21st Birthday Dresses

Remember; it’s all about you! Elevate your confidence and strut your stuff in the party dress of your dreams. Whether you’re in, mesh, knit fabric or swathes of satin with fashionable cutouts or flattering ruching, what matters is that you look as great as you feel. Trust us; your perfect dress is here.