Browse 26 discounted Whistles sleepwear & Undergarments — up to 50% off. Find the best deals on Whistles sleepwear & Undergarments across UK retailers, filtered to your size.
Showing 26 of 26 sleepwear & Undergarments, sorted by deepest discount.
About Whistles
Whistles is a British contemporary womenswear brand founded in 1976, headquartered in London. The brand designs modern womenswear with a refined, considered aesthetic — clean lines, neutral palettes, and elevated everyday pieces designed to span work, evening, and weekend wear. Whistles's product range covers tailoring, dresses, knitwear, denim, blouses, jumpsuits, outerwear, and accessories, with the brand particularly known for its modern tailoring, well-cut trousers, and the consistent quality of its core wardrobe pieces. The brand operates UK retail through standalone stores in London and other major cities, alongside whistles.com. Whistles's positioning sits in the contemporary upper-mid market, between high street and designer, appealing to working women in their 30s–50s seeking elevated, modern British clothing. Whistles deals typically appear in dedicated end-of-season sales, mid-season promotions, and Black Friday events.
Whistles sizing guide
Whistles sizing generally runs true to UK standard, with the brand offering UK sizes 4–18 across most styles plus Petite ranges on selected dresses and tailoring. Tailoring is cut close to the body for a modern silhouette, while knitwear can run slightly relaxed.
When does Whistles go on sale?
Whistles typically runs major end-of-season sales in late June/July and December/January, alongside mid-season promotions, Black Friday, and a continuous Sale section featuring past-season pieces.
Frequently asked questions
Is Whistles a British brand?
Yes — Whistles was founded in 1976 and is headquartered in London. The brand remains a British contemporary womenswear name with strong UK retail presence.
Is Whistles good for work clothes?
Yes — Whistles is particularly known for its modern tailoring, well-cut trousers, and elevated everyday pieces, making it a popular choice for professional wardrobes and work-to-evening wear.
When does Whistles go on sale?
Whistles typically runs major end-of-season sales in late June/July and December/January, alongside mid-season promotions, Black Friday, and a continuous Sale section.
Is Whistles true to size?
Whistles sizing generally fits true to UK standard. Tailoring is cut close to the body for a modern silhouette, while knitwear can run slightly relaxed.
Navy Crepe Lace Trim Cami Dress — £90.00 
Black Cami Detail Top — £35.00 
Green Sahara Cat Alena Pyjama Shirt — £40.00 
Black Velvet Cowl Neck Cami Top — £25.00 
Multicolour Cotton Stripe Pyjama Bottom — £33.00 
Black Cotton Stripe Pyjama Bottom — £33.00 
Black Cotton Stripe Pyjama Shirt — £30.00 
Silver Velvet Cowl Neck Cami Top — £25.00 
Multicolour Cotton Stripe Pyjama Shirt — £30.00 
Blue Satin Cowl Neck Cami — £49.00 
Aubergine Sequin Cami Top — £75.00 
Blue Iris Lace Detail Wrap Cami — £75.00 
Black Cami Fringed Short — £49.00 
Black Lace Trim Crepe Cami Top — £59.00 
Ivory Cotton Stripe Pyjama Shirt — £39.00 
Bronze Ella Cami Top — £65.00 
Black Ultimate Cami Top — £22.00 
White Ultimate Cami Top — £22.00 
Ivory Cotton Stripe Pyjama Bottom — £45.00 
Pale Blue Satin Cami Top — £75.00 
Neutral Heist Contour Seamless Thong — £29.00 
Black Heist Contour Seamless Thong — £29.00 
Black Ella Cami Top — £69.00 
Black Cami Fringe Shirt — £69.00 
Neutral Lace Trim Cami Top — £55.00 
Silver Silk Cami Top — £95.00