Billie-Rose | Cowl Neck Maxi Slip Wedding Guest Dress with Spaghetti Straps and Side Split

Billie-Rose | Cowl Neck Maxi Slip Wedding Guest Dress with Spaghetti Straps and Side Split

£29.95
Colour
Size

Free UK tracked shipping and 30-day returns on every order.

Free UK tracked shipping. Delivered in 8–14 business days (handling 1–2 + transit 7–12 business days). UK delivery only.
30-day returns. Send it back within 30 days, no fuss.
Style Characteristics
  • Cowl neckline with draped front
  • Spaghetti straps
  • Sleeveless design
  • Side split detail
  • Maxi length silhouette
  • Soft, fluid drape
Specifications
  • Product type: Wedding guest dress
  • Material: Woven polyester satin
  • Closure: Concealed side zip
  • Fit: Slim fit with fluid drape
  • Available sizes: S, M, L
  • Care instructions: Hand wash or dry clean recommended
Style Advice
  • Pair with strappy heels for a balanced silhouette
  • Add minimal jewellery to complement the neckline
  • Suitable for evening receptions and formal events
  • Style with a lightweight shawl for added coverage
Size guide

Find your fit

How to measure — body measurement diagram

How to measure

Bust / Chest

Measure around the fullest part, keeping the tape level and under the arms.

Waist

Measure around the narrowest part of your natural waistline.

Hip

Measure around the fullest part of your hips and seat.

Inseam

For bottoms, measure the inner leg from the top of the thigh to the ankle.

Measure over light clothing, keep the tape snug but not tight, and if you're between two sizes we'd suggest sizing up.

Tops, Dresses, Jumpsuits & Blazers

SizeUKBustWaistHip
XS678–81 cm / 30.5–32 in60–63 cm / 23.5–24.5 in85–88 cm / 33.5–34.5 in
S882–85 cm / 32–33.5 in64–67 cm / 25–26.5 in89–92 cm / 35–36 in
M1086–89 cm / 33.5–35 in68–71 cm / 26.5–28 in93–96 cm / 36.5–38 in
L1290–94 cm / 35.5–37 in72–76 cm / 28.5–30 in97–101 cm / 38–40 in
XL1495–99 cm / 37.5–39 in77–81 cm / 30.5–32 in102–106 cm / 40–42 in
XXL16100–104 cm / 39.5–41 in82–86 cm / 32–34 in107–111 cm / 42–43.5 in

Bottoms — Jeans & Shorts

SizeUKWaistHip
XS660–63 cm / 23.5–24.5 in85–88 cm / 33.5–34.5 in
S864–67 cm / 25–26.5 in89–92 cm / 35–36 in
M1068–71 cm / 26.5–28 in93–96 cm / 36.5–38 in
L1272–76 cm / 28.5–30 in97–101 cm / 38–40 in
XL1477–81 cm / 30.5–32 in102–106 cm / 40–42 in
XXL1682–86 cm / 32–34 in107–111 cm / 42–43.5 in

Tops — Shirts, Polos, T-shirts, Blazers, Jackets & Bodywarmers

SizeChestWaist
XS86–91 cm / 34–36 in71–76 cm / 28–30 in
S91–97 cm / 36–38 in76–81 cm / 30–32 in
M97–102 cm / 38–40 in81–86 cm / 32–34 in
L102–107 cm / 40–42 in86–91 cm / 34–36 in
XL107–112 cm / 42–44 in91–97 cm / 36–38 in
XXL112–117 cm / 44–46 in97–102 cm / 38–40 in

Bottoms — Jeans, Cargo, Shorts & Swim

SizeWaistHip
XS71–76 cm / 28–30 in86–91 cm / 34–36 in
S76–81 cm / 30–32 in91–97 cm / 36–38 in
M81–86 cm / 32–34 in97–102 cm / 38–40 in
L86–91 cm / 34–36 in102–107 cm / 40–42 in
XL91–97 cm / 36–38 in107–112 cm / 42–44 in
XXL97–102 cm / 38–40 in112–117 cm / 44–46 in

Some styles run to 3XL and 4XL. Larger sizes follow the same measuring steps — check the measurements on the product page for the exact fit.

Summer 2026

Dressed for long, slow days.

Linen, cotton, and easy tailoring for everything from lunch to the evening.

As worn

How Marllowe looks on our customers.