StyleWatch SpecialStars Celebrate Valentino!
Most events need only one dress, but Hollywood's most fashionable had fun showing off multiple frocks this weekend in Rome. Anne, Uma, Sarah Jessica and more celebrate the fashion house's 45th anniversary in high style. By Melissa Liebling-Goldberg
SIENNA MILLER
After shooting a campaign for Valentino, the star switched back to red-carpet mode in a hot-off-the-runway feathered gown in the designer's signature red.
