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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.

On Saturday: Olivia Palermo (23); Karolina Kurkova (25); Natalia Vodianova (27); socialite Lauren Santo Domingo (33); John Turturro (52); Bernadette Peters (61); Times columnist Paul Krugman (56); Nanette Lepore (51); Frank Gehry (80); Barnes & Noble chairman Len Riggio (68); Ali Larter (33); actress Kelly Bishop (65); and Gilbert Gottfried (54).

On Sunday: Ron Howard (55); Viacom CEO Philippe Dauman (55); Carlyle Group chairman Louis Gerstner (67); Harry Belafonte (82); actor Tim Daly (53); and Mark-Paul Gosselaar (35).