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Formal Dresses in size 18

Step into summer with confidence in our collection of formal dresses for women, perfect for weddings, evening receptions, or elegant dinners. Whether you’re drawn to a chic formal midi dress, a sweeping maxi dress & gown, or a more dazzling sequin dress, this collection of formal evening dresses combines style, sophistication, and seasonal comfort. Pair your timeless fit and flare dress with heels and a bolero for your next black tie event or catch some eyes by wearing our elegant formal wear with sparkly accessories. From formal sundresses for an easy breezy summer look to winter formal dresses for a cosy ensemble, each design in this collection ensures you stay comfy while being stylish. Browse the full women's formal outfits collection covering petite and plus size fits, find your next standout piece today at Roman UK.

310 items
Cream Animal Print Split Sleeve Midi Dress
Blue Chiffon Pleated Neck Midi Dress
White Bardot Floral Tiered Dress
Green Floral Pleated Neck Midi Dress
Cream Floral Print Stretch Midi Dress
Cream Ruched Floral Frill Dress
Pink Dusk Floral Print Shirred Midi Dress
Dusk Pack
White Leaf Print Stretch Bodycon Lace Dress
White Spot Print Pleated Midi Dress
Red Dusk Blurred Foil Print Dress
Dusk Pack
Purple Petite Floral Print Tiered Chiffon Dress
Roman Petite
Metallic Sequin Shimmer Midi Dress
Black Petite Leaf Print Pleated Midi Dress
Roman Petite
Pink Petite Ruffled Stretch Dress
Roman Petite
Blue Ombre Shimmer Plisse Midi Dress
Blue Chiffon V-Neck Midi Dress
Pink Petite Paisley Tea Midi Dress
Roman Petite
Black Petite Chain Trim Shift Dress
Roman Petite
Blue Sequin Embellished Maxi Wrap Dress
Grey Petite Floral Print Tiered Overlay Dress
Roman Petite
Blue Petite Sequin Trim Chiffon Cape Dress
Roman Petite
Blue Dusk Floral Lace Crochet Dress
Dusk Pack
Pink Petite Lace Tie Waist Maxi Dress
Roman Petite
Blue Petite Lace Pleat Midi Dress
Roman Petite
Pink Sequin Cowl Neck Maxi Stretch Dress
Pink Petite Embroidered Maxi Dress
Roman Petite
Red Spot Frill Fit & Flare Dress
Cream Sequin Embellished Sheer Shift Dress
Blue Petite Embellished V-Neck Midi Dress
Roman Petite
Pink Floral Pleated Chiffon Midi Dress
Pink Pleated Chiffon Midi Dress
White Petite Gathered Neck Hotfix Dress
Roman Petite
Pink Floral Print Pleated Midi Dress
Green Spotted Cowl Neck Dress
Pink Floral Ruffle Tie Waist Midi Dress
White Petite Tulip Motif Mesh Midi Dress
Roman Petite
Metallic Sequin Frill Hem Midi Dress
White Petite Floral Chiffon Blouson Overlay Dress
Roman Petite
White Petite Lace Overlay Midi Dress
Roman Petite
Pink Petite Trim Detail Ruched Midi Dress
Roman Petite
Pink Floral Lace Twist Neck Keyhole Dress
Black Sequin Lace Twist Front Midi Dress
Cream Floral Print Bardot Midi Dress
Green Printed Mesh Midi Dress
Pink Embellished Beaded V-Neck Dress
White Petite Lace Pleat Midi Dress
Roman Petite
Pink Ombre Stripe Pleated Midi Dress
Pink Floral Print Frill Wrap Midi Dress
Green Sequin Shimmer Velvet Dress
Pink Petite Floral Print Stretch Dress
Roman Petite
Blue Watercolour Fern Chiffon Dress
Blue A-Line Pleated Halter Dress
Blue Floral Pleated Chiffon Dress
Black Petite Spot Print Pleated Midi Dress
Roman Petite
Black Dusk Ruched Mesh Stretch Dress
Dusk Pack
White Petite Front Twist Jacquard Dress
Roman Petite
Black Sequin Embellished Velvet Bodycon Dress
Blue Embellished Hotfix Tiered Chiffon Dress
White Petite Gathered Neck Jacquard Dress
Roman Petite
Blue Sleeveless Abstract Print Maxi Dress
Blue Petite Abstract Pleated Midi Dress
Roman Petite
Blue Petite Lace Tie Waist Maxi Dress
Roman Petite
Blue Petite Pleated Hem Shift Dress
Roman Petite
Blue Sequin Bodice Betlted Chiffon Dress
Metallic Sequin Trim Shift Dress
Metallic Contrast Sequin Bodice Maxi Dress
Pink Abstract Print Frill Maxi Dress
Metallic Petite Chiffon Sleeve Sparkle Dress
Roman Petite
Green Sequin Lace Ruched Stretch Dress
Blue Petite Floral Pleated Halter Neck Midi Dress
Roman Petite
Blue Petite Front Twist Jacquard Dress
Roman Petite
Black Velvet Twist Front Maxi Stretch Dress
Pink Petite Abstract Print Pleated Midi Dress
Roman Petite
Orange Dusk Pleated Tie Back Midi Dress
Dusk Pack
Red Petite Floral Pleated Halter Neck Midi Dress
Roman Petite
Black Sequin Lace Ruched Stretch Dress
Blue Sequin Sweetheart Stretch Midi Dress
Blue Glitter Velvet Maxi Stretch Dress
Green Metallic Lace Sequin Midi Dress
Grey Floral Pleated Halter Midi Dress
Pink Asymmetric Flared Hem Midi Dress
Green Petite Front Twist Jacquard Dress
Roman Petite
Black Sequin Cowl Neck Maxi Stretch Dress
Blue Petite Contrast Sequin Shift Stretch Dress
Roman Petite
Black Side Twist Sleeveless Glitter Dress
Red Sequin Lace Ruched Stretch Dress
Black Petite Contrast Bow Midi Dress
Roman Petite
Black Chiffon Pleat Neck Midi Dress
Blue Floral Print Pleated Maxi Dress
White Floral Print Ruched Midi Dress
Orange Floral Cowl Neck Midi Dress
Green Floral Bardot Midi Dress
White Floral Premium Stretch Shift Dress
Blue Jacquard Belted Fit & Flare Dress
Pink Lace Detail Wrap Midi Dress
Pink Animal Print Pleated Chiffon Dress
White Floral Frill Wrap Midi Dress
Pink Floral Frill Chiffon Cape Midi Dress
Orange Ruffle Shimmer Midi Dress
Blue Off The Shoulder Floral Dress
Pink Floral Print Pleat Neck Midi Dress
Pink Floral Placement Halter Neck Midi Dress
Purple Cowl Neck Tie Waist Dress
Blue Bardot Ruffle Wrap Dress
Blue Spot Print Pleated Chiffon Dress
Pink Jacquard Midi Wrap Dress
Purple Blurred Print Pleated Maxi Dress
Green Floral Bardot Belted Maxi Dress
Red Floral Frill High Low Midi Dress
Blue Floral Frill Midi Wrap Dress
Blue Floral Twist Front Midi Dress
Blue Lace Detail Wrap Midi Dress
White Monochrome Printed Satin Midi Dress
Cream Petite Leaf Midi Wrap Dress
Roman Petite
Blue Floral Print Border Premium Stretch Midi Dress
Black Embellished Flapper Dress
Orange Floral Bias Midi Dress
Blue Plisse Cowl Back Midi Dress
Purple Bardot Wrap Front Stretch Dress
Blue Ruffle Midi Wrap Dress