Calvin Klein: Everything on the website is 40 percent off.
Duration: Until 2:59 am EDT on Friday.
Gilt: Valentino sunglasses are heavily discounted.
Duration: Until Tuesday at 11 p.m. EDT.
Hautelook: Urban Decay cosmetics are on sale for up to 60 percent off.
Duration: Until Wednesday at 11 a.m. EDT.
Piperlime: A wide variety of shoes and apparel are on sale, including merchandise from 7 for all Mankind, Splendid, Frye and Stuart Weitzman.