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Model Maggie Rizer is turning 31 today. Dave Matthews is turning 42. Times book critic Michiko Kakutani is 54. Hot 97 host Angie Martinez is 37. Internet tycoon Lockhart Steele is 35. Indie film honcho Michael Barker is turning 55. Earl Graves, the founder of Black Enterprise, is turning 74. Author Judith Krantz is 81. Singer Joan Baez is 68. And Kate Middleton, who stands to become a princess if Prince William ever pops the question, turns 27 today. Weekend birthdays—including that of Jared Kushner—after the jump!

On Saturday: Observer publisher Jared Kushner will be 28. Porn pioneer Al Goldstein will be 73. Rod Stewart is turning 64. Pat Benatar is turning 56. George Foreman will be 60. And America's Next Top Model winner Saleisha Stowers will be 23.

On Sunday: Mary J. Blige will be 38. Socialite Samantha Boardman Rosen will turn 37. Country singer Naomi Judd will be 63. And actress Amanda Peet will celebrate her 37th.