Janice Min, who recently stepped down as the editor of Us Weekly, is celebrating her 40th birthday today. Martha Nelson, the woman who oversees People, is turning 57. Weatherman Sam Champion is 48. Sebastian Stan of Gossip Girl is turning 26. Danny Bonaduce is 50. Author and screenwriter Tom Perrotta is turning 48. Agnes Gund, the former president of the Museum of Modern Art, is 71. Former U.S. Surgeon General Joycelyn Elders is turning 76. And ex-Cuban president Fidel Castro turns 83 today.

The Society of Memorial Sloan-Kettering Cancer Center hosted its second annual Spring Ball at the Plaza on Tuesday night. More than 350 people turned out for the NBC Universal-sponsored event, including NBC Universal president Jeff Zucker and his wife Caryn (left), Mort Zuckerman, Robert De Niro and Grace Hightower, Julia and David Koch, Tory Burch and Lyor Cohen, Hilary Geary and Wilbur Ross, Jonathan and Somers White Farkas, Shoshanna Lonstein Gruss, Peter and Jamee Gregory, Ginny and Tiki Barber, Sherman and Chris Meloni, Frank and Kathie Lee Gifford, Hoda Kotb, Peggy Siegal, Natalie Morales, Valesca Guerrand Hermes, Jennifer Creel, Renee Rockefeller, Alexandra Lebenthal and Jay Diamond, Danielle Ganek, Kimberly Kravis, Muffie Potter Aston, Hilary Gumbel, Dr. Harold Varmus, Dennis Basso, Heather Mnuchin, Anne Grauso, Sylvester and Gillian Miniter, Gigi Mortimer, Sara Ayres, Shafi Roepers, Leslie Jones, and LL Cool J. [PMc, Wireimage, NYSD]

The Savannah College of Art and Design held its Style Etoile Awards at the James Cohan Gallery on Monday night. The evening's honorees included Russell Simmons, Amanda Burden, Cornelia Guest, Robin Givhan, and William Ivey Long (left), and attendees at the event included Cynthia Rowley, Agnes Gund, Michael Fink, Yigal Azrouël, Mario Buatta, Bobby Zarem, music exec Michael Mauldin and his wife Judy, producer Tom Fontana, SCAD president Paula Wallace, Ann Slater, designer Lars Nilsson, and Russell's brother and girlfriend—Danny Simmons and Julie Henderson. [PMc, Wireimage, WWD, NYSD]

News that won't be surprising to anyone: The art world is still steeped in gloom, as evidenced by the scene at last night's opening gala for the Art Show at the Park Avenue Armory. The benefit, which used to be sponsored by Lehman Brothers and be a riot of hedge funders dropping millions on pieces to add to their collections, was attended by the likes of Donald Marron, Steve Schwarzman, John McEnroe, Glenn Lowry, Agnes Gund, and Michael Ovitz, but still saw "meager" sales.

New York City's favorite gay, orange-hued weatherman Sam Champion, turns 47 today. Us Weekly editor Janice Min is also celebrating. It's her 39th birthday today, which makes her approximately 25 years older than the average Us reader. She isn't the only magazine star who will be munching on cake in the office today: Martha Nelson of People is 56. Other birthdays: Fidel Castro is 82, Danny Bonaduce is 49, and art maven (and heiress) Agnes Gund turns 70. And actor Sebastian Stan, who may be better known as Leighton Meester's boyfriend, turns 25.

Heir to the Gund family fortune, "Aggie" is a major patron of the Museum of Modern Art, currently serving as its "President Emerita."