Most Beautiful Couples

From Jessica Simpson & Nick Lachey to Jennifer Lopez & Marc Anthony, see which 12 couples make the most attractive pairs in Hollywood. By Serena Kappes

JUDE & SIENNA

It's not hard to see why Sienna Miller said she's the "happiest girl alive" after getting engaged to PEOPLE's Sexiest Man Alive, Jude Law, 32. The actress, 23, has said of her fiancé, "Sometimes I can't believe how handsome he is." But their relationship, which began on the set of Alfie, is more than just a mutual admiration society. Miller is also close to Law's three kids, Rafferty, 8, Iris, 4, and Rudy, 2 (with ex-wife Sadie Frost).