By Elizabeth Snead, Los Angeles Times Staff Writer Who's got the best standing in Hollywood? And who's a real slouch? To find out, we scoured the red carpets to find ten actresses with the best and worst posture. Check out where Katie Holmes, Kirsten Dunst, Keira Knightley, Kate Hudson, Charlize Theron, Lindsay Lohan and more stand -- or fall -- in the Posture Perfect photo gallery. Jeepers. Why dont their publicists, personal trainers or maybe their mothers tell these gals to straighten up and fly right.