New Yorker staff writer and best-selling author Malcolm Gladwell turns 46 today. Writer/director Noah Baumbach is turning 40. Charlie Sheen is 44. Former Bear Stearns chairman Ace Greenberg is 82. Novelist Kiran Desai turns 38. Veteran book editor Gary Fisketjon is turning 55. Big-time commercial director Bryan Buckley turns 46. Entertainment exec Garth Ancier is turning 52. Olympic snowboarder Shaun White is 23. Michael Huffington, the former Republican congressman and ex-husband of Arianna, is turning 62. And Adam Curry, the former MTV VJ and now a podcaster, turns 45 today.

Gucci celebrated the launch of its Tattoo Heart Collection on Wednesday, a line of products that benefits UNICEF. Rihanna, who is the new face of the campaign, was joined Gucci creative director Frida Giannini at a snowflake lighting ceremony at the Grand Army Plaza, which was followed by an event at Gucci's flagship and dinner at the Plaza's Oak Room. Guests included Madonna, Penn Badgley, Blake Lively, Adrian Grenier, Monet Mazur, Timbaland, Mary J. Blige, Erin Wasson, Becki Newton and Chris Diamantopoulos, Kelly Rutherford, Patricia Field, Charlotte Ronson, Shoshanna Lonstein Gruss, Jessica Joffe, Julia Restoin Roitfeld, Mamie Gummer, Eleanor Ylvisaker, Bethenny Frankel, Anja Rubik, Hal Rubenstein, Magnus Berger, Joe Zee, Kelly Killoren Bensimon, Lizzie and Jonathan Tisch, and Maggie Betts. [Style.com, NYO, PMc, Wireimage]

Malcolm Gladwell, author of The Tipping Point and Blink and staff writer at The New Yorker, turns 45 today. Others celebrating: Novelist Kiran Desai is 37, famed editor Gary Fisketjon is 54, and advertising guru Bryan Buckley is 45. Writer/director Noah Baumbach is 39. Charlie Sheen is turning 45. Former VJ and now Web personality Adam Curry is 44. And Arianna Huffington's right-wing ex-husband, Michael Huffington, is 61 today.

The daughter of renowned author Anita Desai, Indian-American novelist Desai is the author of The Inheritance of Loss and the youngest-ever winner of the Man Booker Prize, Britain's top literary award.