It's a big birthday for Jennifer Lopez. She's celebrating the big 4-0 today. Other people who will be blowing out candles this fine Friday: Broadway star Kristin Chenoweth is turning 41. Anna Paquin is 27. Director Doug Liman turns 44. Director Gus Van Sant is turning 57. Billionaire investor Nelson Peltz is 67. Artist Alex Katz is turning 82. Senator Claire McCaskill is 56. Governor Charlie Crist of Florida is 53. Barry Bonds turns 45. Retired basketball stars Rick Fox and Karl Malone are turning 40 and 46, respectively. Michael Richards of Seinfeld fame is turning 60. Actor Dan Hedaya is 69. And Wonder Woman—actress Lynda Carter—celebrates her 58th birthday today. Weekend birthdays after the jump.

♦ The opening of Elizabeth Peyton's New Museum exhibition on Tuesday was full of her friends and fans like Marc Jacobs (with boyfriend Lorenzo Martone, left), Glenn O'Brien, Amy Astley, Peter Brant and Stephanie Seymour, Hope Atherton, Cecily Brown, Rachel Feinstein and John Currin, Alex Katz, Kiki Smith, Gavin Brown, Barbara Gladstone, Debbie Harry, and Thelma Golden. [The Daily, PMc]

This is the one day when Jennifer Lopez has the right to act like a diva: The new mom turns 39 today. Also celebrating: Broadway star Kristin Chenoweth turns 40 today (although she looks like she's 12). Anna Paquin is 26. Michael Richards of Seinfeld fame turns 59. Billionaire investor Nelson Peltz is 66. Artist Alex Katz is 81. Director Gus Van Sant turns 52. And scandal-plagued baseball star Barry Bonds is 44.

Painter/sculptor Katz is known for his brightly-colored canvases fusing figural, landscape, and abstract painting.