Wedding Guest Dresses

Discover the perfect wedding guest dresses at Sister Online. From floral, floaty styles for summer weddings to modern, flattering designs from Kevan Jon and timeless silhouettes from Alquema, find your ideal dress for any wedding celebration.

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Sale 50% off
Only One Left

Dea Kudibal Zariadea Oversized Tie Neck Circle Print Silk Dress El Sol

Regular price £459.00 £229.00 50% off
Save £230.00
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Sale 51% off
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Dea Kudibal Idaniadea NS Paisley Print Linen Maxi Dress With Rope Belt Paisley Frog

Regular price £329.00 £162.00 51% off
Save £167.00
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Sale 56% off
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Neon Star Long Sleeve Wrap Kiss Print Long Dress Mint/Pink

Regular price £135.00 £60.00 56% off
Save £75.00
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per 
Sale 50% off

Allison Designs Circle Print Tiered Layered Sleeveless Silk Dress Pink/purple

Regular price £420.00 £210.00 50% off
Save £210.00
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Sirens Imelda Empire Seam Ditsy Floral Print Tiered Dress Navy Multi

Regular price £239.00 £119.00 50% off
Save £120.00
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Sirens Imelda Empire Seam Floral Print Tiered Dress Cream Multi

Regular price £239.00 £119.00 50% off
Save £120.00
Unit price
per 
Sale 50% off

Sirens Cora Mandarin V Collar Ditsy Floral Midi Dress Cream Multi

Regular price £239.00 £119.00 50% off
Save £120.00
Unit price
per 
Sale 50% off

Caliban Printed V Neck Short Sleeve Maxi Dress Turquoise/white

Regular price £275.00 £137.00 50% off
Save £138.00
Unit price
per 
Only One Left
Only One Left
Sale 55% off

Arggido Floral Print Lace Tie Back Dress Green/orange

Regular price £159.00 £72.00 55% off
Save £87.00
Unit price
per 

Our Purpose

At Sister, our purpose is simple: to make fashion personal. We believe shopping should feel inspiring, not overwhelming, and our boutique offers a place where you can build your whole wardrobe without needing to go anywhere else. Every piece we stock is chosen to bring joy, confidence, and practicality into our customers’ everyday lives.

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Exclusive Pieces

Every piece is selected for individuality and quality.

Trusted for Generations

35 years in business, customer returning for 30+ years.

Personal Touch

Styling advice, honest fit guidance & over the phone support.