Now this is a reason to shop—and celebrate! For the second year, Vestiaire Collective, a site that serves as a safe platform to buy and sell authentic pre-owned luxury items, is hosting an annual charity sale of "partywear" pieces, which happily coincides with the start of holiday dress shopping. Celebrities and designers alike have donated high-end coveted pieces starting at £100 (or, roughly $162) from their personal collections, with proceeds going to their charity of choice. Scoop up Rachel Weisz's pink Joseph dress for £250 (or, $404) or Gemma Arterton's leather Armani dress for £750 (or, $1,212), both benefiting children's charity NSPCC. “We are thrilled that so many leading lights in the fashion world have come out to support our annual charity initiative," said Fanny Moizant, UK Managing Director of the site, in a statement. "This year we expect to raise thousands for charities from Barnardo's to NSPCC." Talk about feel-good fashion! Head on over to vestiairecollective.com to snag a designer piece that's (finally) worth the splurge.