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These are the best plus-size wedding guest dresses on the market RN

These beauties range from sizes 12 to 30

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plus size wedding guest dresses
Anna Ozerchuk

The bells are ringing, love is in the air, and now comes the big question: What are you wearing to their big day? It's no secret that searching for a beautiful wedding guest dress as a curvy girl can be a nightmare. From matching the theme to avoiding certain colours, there's a lot to think about and picking the right ’fit that ensures you look fabulous and totally wedding-ready (without upstaging the bride, of course) can be tricky.

That's why I’ve gone and done all the hard work for you. We’ve all felt that pressure to find the one – no, not the person, the dress. In addition to sourcing the best plus-size wedding dresses and bridesmaid dresses, I've also scoured the internet to bring you my edit of the best plus-size wedding guest dresses out there for the next nuptials you attend, ranging from sizes 12 to 30. Whether you’re looking for a maxi, wrap, sleeveless, or floral number, my roundup has got all your options and budgets covered.

Dress secured, don't forget about the foundations! Strappy dress season may be a dream for some, but for the bustier gals among us, it's more like a daunting challenge. Whether it’s a backless stunner or a barely-there strap moment, Booby Tape is my go-to for keeping things perky and my outfit looking flawless. Make sure to add your finishing touches, too. Weddings are the perfect excuse to go bold with your accessories, and I’ve never met a doorknocker earring I haven’t liked!

So, without further ado, keep scrolling to find your dream dress and get ready to slay the wedding aisle in style...

1
best black tie dress

Asos Curve Flutter Sleeve Ruffle Maxi

Flutter Sleeve Ruffle Maxi

If you’re attending a black-tie wedding, then why not opt for this romantic maxi from ASOS? Style with a sequin bag and metallic heels and it’ll have you serving pure elegance. Available in sizes 18 to 30.

2
Best pale blue dress

Whistles Pale Blue Tie Back Maxi Dress

Pale Blue Tie Back Maxi Dress

Let the pretty silhouette do the talking and style with strappy silver heels and your favourite silver accessories. The high neck and tie-back details are the perf combination of understated and elegant. Available in sizes 16-20.

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3
Best dress under £100

Next Short Sleeve Asymmetric Midi Dress

Short Sleeve Asymmetric Midi Dress

The asymmetric details make this beauty look ultra high-end but the jersey material means you can be chic and feel comfortable from the ceremony to the reception. Plus, it’s under £100 and available in sizes 6 to 22.

4
Best midaxi dress

Pretty Lavish Lissy Tie Back Midaxi Dress Curve

Lissy Tie Back Midaxi Dress Curve

Pretty Lavish has been on our radar for a while for their timeless styles and luxurious knits and we’re l-o-v-i-n-g their curve range. Available in sizes 18 to 26, this tie-back dress with adjustable straps and soft cups will look dreamy at a countryside wedding.

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5
best butter yellow dress

Reformation Britney Satin Dress

Britney Satin Dress

Ugh, we are obsessed with butter yellow RN, and this gem comes in sizes UK 4 to 28. If the wedding you’re attending is outdoors, style with strappy wedges to avoid getting stuck in the mud.

6
Best navy dress

River Island Navy Satin Cold Shoulder Maxi Dress

On Sale
Navy Satin Cold Shoulder Maxi Dress

It doesn’t get more timeless than a navy wedding guest dress. The balloon sleeves, ruched waist, floaty skirt and plunge neckline make this River Island pick perfect for an outdoor ceremony. Available in sizes 18 to 28.

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7
Best Rixo dress

Rixo Sandrine midi dress

On Sale
Sandrine midi dress

Embody the essence of the day with this jacquard daisy dress from Rixo. Plus, it will look super-cute at the farmer's market with a straw bag and your fave sandals. Available in sizes 6 to 20.

8
Best red dress

Reformation Bryson Dress

Bryson Dress

Nope, we won’t stop obsessing over Reformation dresses. Available up to size 28, their best-selling Bryson dress is one of our readers’ faves and can be worn to a wedding, date or even a summer picnic depending on how you style it. That’s a whole lot of bang for your buck!

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9
Best off the shoulder dress

Asos Curve Off Shoulder Asymmetric Maxi Dress

Off Shoulder Asymmetric Maxi Dress
Now 75% Off

Channel your inner Grecian goddess with ASOS’ off-the-shoulder wedding guest dress. The thigh-high slit makes this one super-sexy and appropriate for high-summer nuptials. Available in sizes 18 to 30.

10
Best pink dress

Omnes Iris Maxi Dress in Cerise Pink

Iris Maxi Dress in Cerise Pink

If you’re lucky enough to be jetting off on a destination wedding this summer make sure you pack this pretty pink number for the celebrations. Available in sizes 6 to 24.

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11
Best wrap-front dress

ASOS DESIGN Curve Cape Detail Pleated Maxi Dress

DESIGN Curve Cape Detail Pleated Maxi Dress

Happy couple tying the knot with a breezy, beachside ceremony? This wrap-front maxi dress can be dressed up with slingbacks and bangles and wheeled out all summer long with your fave flip-flops and sun hat. Available in sizes 18-30.

12
Best versatile dress

Pretty Lavish Lilianna Balloon Sleeve Printed Dress Curve

On Sale
Lilianna Balloon Sleeve Printed Dress Curve

For those who will only buy a wedding guest dress they will 100% be able to wear again, you could defo get away with wearing this Pretty Lavish dress to the office when wedding szn ends. Available in sizes 18 to 26.

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13
Best floral dress

Rixo Claudia Rose Cream

Claudia Rose Cream

There’s nothing like a romance that starts on the wedding dance-floor – so if you’re single, go classic with this best-selling Rixo dress that’s available in sizes 18 to 26. For an extra special touch, opt for a gauzy scarf in a similar pattern and cherry red earrings.

14
Best polka dot dress

Joanna Hope Puff Sleeve Printed Dress

Puff Sleeve Printed Dress

Polka dots are always a good idea when it comes to occasion dressing and this puff sleeve maxi from Simply Be is a real timeless piece. Available in sizes 16 to 32. Wear with a denim trench coat and ballet flats for a day at the office.

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15
Best bow dress

Atsu Bow Maxi Dress

Bow Maxi Dress

For those of you attending a wedding that’s set to be as extra and OTT as the Oscars, this sublime dress from Atsu is guaranteed to get you on the best-dressed list. Available in sizes 1X to 3X and currently on sale, it’s a must for your occasionwear wardrobe.

16
Best ombre dress

Joanna Hope Asymmetric Pleated Dress

Asymmetric Pleated Dress

Go bold in this blue ombre number from Joanna Hope. The pretty pleats and gorgeous flowing design are bound to get you a compliment (or ten). Available in sizes 8 to 26.

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17
Best tie-dye dress

Simply Be Blue Blurred Print Satin Cami Maxi Dress

Blue Blurred Print Satin Cami Maxi Dress

If florals just aren’t your thing, opt for Simply Be’s cool tie-dye effect midaxi instead. This slip style will look so chic paired with a cute clutch at wedding but will also work post big day with chunky sandals and a denim jacket. Available in sizes 10 to 20.

18
Best ballon sleeve dress

Joanie Victoria Floral Damask Balloon Sleeve Midaxi

Victoria Floral Damask Balloon Sleeve Midaxi

A summer wedding in the UK doesn’t always guarantee summer weather. This clay-coloured cutie will keep goosebumps at bay if the breeze gets nippy, plus, it will look just as good with knee-high boots and a trench as it will with your fave occasion pumps.

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19
Best chocolate brown dress

Reformation Michelle Dress

Michelle Dress

We knew chocolate brown and polka dots were trending but we didn’t think they could look this good combined. This classic dress is perfect for summer ceremonies and is available in sizes 18 to 28.

20
Best pleated dress

Chi Chi Clothing Floral Print Ruffle Pleated Midi Dress

Floral Print Ruffle Pleated Midi Dress

We absolutely love this bold beauty! She’s perfect for everything from countryside weddings and graduation ceremonies to summer date nights and drinks with the girls. Available in sizes 18 to 26

Headshot of Lauren Nicole Coppin Campbell
Lauren Nicole Coppin Campbell
Contributing Curve Editor

Lauren Nicole Coppin Campbell is the Contributing Curve Editor of Cosmopolitan UK. The former curve model and digital content creator has worked in the fashion industry, specialising in plus-size fashion content, for six years. Known for her excellent eye for style, captivating imagery and witty sense of humour to match, Lauren Nicole continues to inspire women to live boldly through their clothes.

Find her on TikTok 

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