Celebrities in Gowns: Beyoncé, Heidi Klum, Sienna Miller

Between the Emmys, London and Milan Fashion Weeks, and NYC's Ballet Gala, there were lots of fashionable fêtes happening this week — and our favorite style stars hit the red carpet dressed to the nines. While some stuck with short frocks, a select few went all out in sleek, sophisticated, floor-length gowns. Sienna Miller partied in beaded Dior, Natalia Vodianova dazzled in feathered Givenchy Couture, and a pregnant Beyoncé showed off her growing bump in a clingy Lanvin number. Click through to see the 10 glamorous gowns we're loving from the week.