Hollywood's Dazzling Dozen

PEOPLE's fashion expert Susan Kaufman picks the 12 most stylish starlets under 30 – and explains their appeal. By Serena Kappes

NATALIE PORTMAN

When it comes to fashion, Garden State's Portman (from left: in an Egyptian-style gown; retro in a '20s-flavored dress; in Zac Posen) just can't go wrong: "She can wear avant-garde, funkier things because she'll make anything look beautiful. It's her natural radiance that transcends the clothes," says Kaufman. No wonder Portman, 23, is a muse for Posen.