Theory Underwear & Nightwear for Women

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Theory is an American clothing brand that specializes in high-end trousers. The label developed an innovative stretch fabric for its first women's pants and later applied similar technology to its men's collections. These simple, chic, functional designs are essential wardrobe staples.
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Underwear & Nightwear
Basques
Bodysuits
Bras
Camisoles
Chemises
Pajamas
Panties
Robes
Socks & tights
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On sale
Seasons
FW25
SS25
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Customer stories
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Alexandra V.
Best price on the internet!Best price on the internet! I saved $700 compared to Farfetch pricing!!! And delivery was quick (to Australia!). Will definitely shop here again.
Allison S.
I had no issues atI had no issues at all. My delivery arrived faster than expected. I love my ballet flats :) Thanks to italist for an an amazing shopping experience.
Sissy S.
Golden GooseExcellent service! The Golden Goose shoes I ordered arrived in about 4 days! From Italy to the US...amazing! I ordered two different sizes and had to return a pair and that process was easy and quick.
Eliza H.
Beautiful clothes and efficient deliveryI highly recommend italist.com. Beautiful selection of pieces and efficient delivery. I will definitely shop here again.
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