Chelsea Clinton is celebrating her 29th birthday today. Elizabeth Taylor is turning 77. Josh Groban is 28. Ralph Nader is 75. Joanne Woodward, the Oscar-winning actress and widow of Paul Newman, turns 79. Actor Noah Emmerich is turning 44. Lynyrd Skynyrd's Johnny Van Zant is 50. Rozonda Thomas (or Chilli) from TLC is 38. And the head of the 92nd St. Y, Sol Adler, turns 55. Weekend birthdays—including Olivia Palermo's big day—after the jump.