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One of the upsides to filming The Killer Inside Me for Jessica Alba (in Chloe) and Kate Hudson (in Louis Vuitton)? The vintage ’50s wardrobe. “I love vintage, so it was really amazing,” Alba told us at the film’s Tribeca Film Festival premiere. “But I’m glad we’ve moved on from those corset and itchy fabrics and everything!” For Hudson, the flashback fashion took some getting used to at first. “It’s so not me! I’m not used to the A-line. The whole ’50s look is new to me,” she said. “I feel like I was mainly in slips though. The bras are what I found interesting because they were cone bras! I got into it though, it was fun!” Hudson might even be a retro fashion convert: “The was this [rose dress] that I really loved.” Click on the gallery to get a sneak peek at the actresses in costume on set.

—Nakisha Williams