50 Most Beautiful Female Celebrities

50: Ashley Greene Where you've seen her: On the big screen as a good vamp in the Twilight series Why we love her: She's the bubbly, optimistic vamp in the Twilight series -- which is a nice change form the angst-fest we get from the rest of the fanged ones!

49: Maggie Q Actress and model Maggie Q Why you know her: She's appeared in everything from action blockbusters (Live Free or Die Hard) to art-house fare ( New York, I Love You) Why we love her: She's passionate about PETA and was even responsible for making sure no real fur snuck onto the costumes for the Chinese film Three Kingdoms. Plus, check out her vegetarian recruiting poster!

48: Holly Madison Where you've seen her: On Hugh Hefner's arm on the reality TV show "The Girls Next Door" Why we love her: Hef's former "Number 1 girlfriend" has survived her breakup with Mr Playboy himself -- no mean feat in Hollywood!

47: Danica Patrick Where you've seen her: Going very, very fast around a racetrack Why we love her: Patrick may be the best-known female auto racer in the world, and has the record high finish for a woman at the Indianapolis 500.

Number 46: Gina Carano She is Gina Carano. Why you’ve heard of her: She’s been referred to as “The face of Women’s Mixed Martial Arts” Why we love her: Two words: American. Gladiators. Plus, she could beat the crap out of us with her hands tied behind her back, and we have to respect that.

Number 45: Leona Lewis She is Leona Lewis Why you know her: She went from a singing competition to musical stardom Why we love her: After winning X-Factor (the British equivalent of American Idol), Lewis proved her singing and songwriting chops with the albums Spirit and Echo. Even famously grumpy Simon Cowell is a fan!