PEOPLE Style Awards

Angelina, Beyonce, Jessica – style director Susan Kaufman reveals her annual list of fashion's biggest stars. By Serena Kappes

MOST IMPROVED MALE: JACK OSBOURNE

"Talk about extreme makeovers – Jack Osbourne has gone the full distance," says Kaufman. Ozzy's son has not only trimmed down, he's taken up his style a slew of notches. Once sloppy and grungy (left, in 2004), he's now tailored and funky (right, in London in June). "Kudos to him for the effort," says Kaufman.