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.

Sale 70% off
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Penny Black Pleat Hem Houndstooth Dress Navy/White

Regular price £159.00 £47.70 70% off
Save £111.30
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Sale 43% off

Milano Italy Tiered Gathered Print Long Dress Graphite

Regular price £139.00 £79.00 43% off
Save £60.00
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Sale 23% off
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Izabella Pleat Front Midi Dress Royal Blue

Regular price £195.00 £150.00 23% off
Save £45.00
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Sale 60% off

Marc Cain Spot Print Frill Front And Hem Maxi Dress Black/White

Regular price £359.00 £143.00 60% off
Save £216.00
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Sale 50% off
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Izabella Polka Dot Frill Jumpsuit With Tie Waist Navy/Cream

Regular price £199.00 £99.50 50% off
Save £99.50
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Sale 75% off
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Forever Unique Ascari Bandage Bodycon Midi Dress Nude

Regular price £275.00 £68.75 75% off
Save £206.25
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Sale 53% off
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Camelot Lace Side Dress Beige/Black

Regular price £169.00 £80.00 53% off
Save £89.00
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Sale 30% off
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Onjenu Faye Tiered Hem V Neck Waisted Maxi Dress Purple/yellow/green

Regular price £145.00 £101.00 30% off
Save £44.00
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Sale 50% off

Aspiga Victoria A V Neck Tiered Hem Needlecord Long Dress Atlantic Blue

Regular price £279.00 £139.50 50% off
Save £139.50
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Sale 50% off

Pomodoro Floral Print Tie Side V Neck Wrap Dress Emerald/black

Regular price £120.00 £60.00 50% off
Save £60.00
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Sale 50% off

Primrose Park Opal V Neck Button Down Blown Floral Print Dress Purple/pink

Regular price £350.00 £175.00 50% off
Save £175.00
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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.