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‘SISTER10’ at checkout for 10% off your 1st order (excl. sale items)

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.

Only One Left
Sale 48% off

Sara Roka MaryEllen90 Taffeta Tie Belt Waisted Shirt Dress With Short Sleeve Burnt Orange

Regular price £565.00 £295.00
Save £270.00
Unit price
per 
Sale 39% off
Only One Left

Sara Roka Dralla85 Abstract Bird Print Tie Waist Shirt Dress Red Doves

Regular price £575.00 £350.00
Save £225.00
Unit price
per 
Sale 49% off

Sara Roka Nidina85 Painted Palm Print Skater Shirt Dress Deco Indigo Emerald - BELT SOLD SEPARATELY

Regular price £585.00 £299.00
Save £286.00
Unit price
per 
Only One Left

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.