Model and MTV host Alexa Chung turns 26 today. Yankees star Johnny Damon has two reasons to celebrate today: The Yankees won the World Series last night, of course; and it's also Damon's 36th birthday today. Ryan Adams is turning 35 today. Bryan Adams is turning 50. (Confusing!) Tilda Swinton is 49. Economist Jeffrey Sachs is turning 55. Actress Tatum O'Neal is 46. Folk legend Art Garfunkel turns 68. Famke Janssen is 44. Actor Sam Rockwell is turning 41. Kevin Jonas of the Jonas Brothers is 22. And Kris Jenner, the woman to blame for creating all those Kardashian girls, turns 54 today.