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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FW25
SS25
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Customer stories
Join thousands of shoppers discovering the thrill of luxury finds at italist. Real reviews, genuine luxury, always at unmatched prices.
Angela B.
Grateful CustomerIt is always a little concerning when ordering from so far away, but the cashmere sweater I received is gorgeous!!! From the craftsmanship of construction to the artistic coloring the quality is of high standard. I am more than satisfied. The service was excellent as I was notified all through the process from the time the order was made till it recached my door. Thank You ITALIST
Ayelet W.
A very good serviceItalist made me very happy. I bought a bag of JW Anderson, from the new collection, it was in a very good price. The dilivery was very fast. And it's outentik. I am sure that I will keep buying from Italist in the future.
Angela R.
Great shopping experience!Found my ideal coat for a good price and received it within a few days. I could not be happier. This is my fourth purchase from Italist and it most certainly will not be my last. I love to be able to shop from boutiques far away and get the best price possible.
Mubarak Y.
Customer serviceI would like to thank you guys for the best customer service I will ever wish! You guys did amazing job buy sending me what I was expecting and its so fast for the delivery. I will recommend your service to anyone its good and legit. Thank you Muby from Canada
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