10. Allison Williams
Born in New Canaan in 1988, Williams was no stranger to show biz. After all, her father is former “NBC Nightly News” anchor Brian Williams and her mother is a TV producer. While attending Yale, Williams was a part of the improv troupe, Just Add Water and found a niche in comedy. With her comedy experience, she caught the attention of Judd Apatow who decided to cast her in the HBO series “Girls” starring Lena Dunham.