Happy Birthday, Kristen Wiig! Shop Her Best Looks Kristen Wiig is not only one of the funniest women in Hollywood — she's also one of the most stylish. In honor of her 40th birthday, Lucky has rounded up some of Wiig's most fashionable moments. Even better? You can shop them, too! From floral dresses to jumpsuits, and rich colors to nude tones — they're all one click away.