Ryan Adams turns 34 today. Yankee Johnny Damon is 35. Celebrity economist Jeffrey Sachs is celebrating his 54th. Art Garfunkel is turning 67. Actress Tatum O'Neal is 45. Kevin Jonas of the Jonas Brothers turns 21. Famke Janssen is 43. Author Joyce Maynard is 55. Actress Tilda Swinton is turning 48. Sam Rockwell is 40. And Kris Jenner, the woman who you can thank for bringing Kim Kardashian into this world, is 53.