• Start your engines, ladies: Sean Avery and Kelly Klein have split up. [P6]
• Mariah Carey may have collected as much as $1 million to perform three or four songs on St. Barts on New Year's Eve. [R&M]
• Lots of unresolved questions remain concerning the death of John Travolta's 16-year-old son, Jett, last week. [TMZ, NYP, Mirror]
• Get ready to see more of Lourdes Leon: Madonna's 14-year-old daughter has reportedly enrolled in Manhattan's Professional Children's School with hopes of starting an acting career. [Daily Mail]
• The new year isn't shaping up to be much fun for Gwyneth Paltrow. Her new diet bans dairy, gluten, meat, shellfish, nuts, potatoes, condiments, sugar, alcohol, and caffeine. [Telegraph]

It's winter, and Anderson Cooper has a European friend to help stock his closet. Britney Spears turned to her ex-husband for warmth, and Alec Baldwin's rising blood pressure warmed an entire Westin ballroom.

♦ Madonna and A-Rod are reportedly shopping for "love nests" on the Upper East Side. They're looking for something between Fifth and Park, from 60th Street through the 80s, in case you have any suggestions. Oh, and they're looking for retreats in Hamptons, too. [P6]
♦ The blame game begins: Ivana's friends say her split with Rossano Rubicondi was his fault because he's been dating a model. Rossano, meanwhile, says Ivana is to blame because she's been dating a model. [R&M]
♦ Robert and Blaine Trump are scheduled to make their first appearance in Manhattan Supreme Court this morning as the couple looks to end their 25-year marriage. Prepare for things to get "exceptionally ugly." [NYP]
♦ Uma Thurman's parents unknowingly hired one of the bookers from Ashley Dupre's escort agency to run their upstate yoga center. [NYP]

Peaches Geldof carrying takeout in Brooklyn ... Ed Westwick walking around town in a velour track suit ... Kate Winslet talking on her cell phone in the West Village ... Kelly Rutherford buying a pretzel on the street with her baby Hermes ... Salma Hayek carrying her baby Valentina ... Taylor Momsen and Connor Paolo filming scenes for Gossip Girl in Midtown ... Katie Holmes heading to yoga class and later getting out of an SUV outside her East 13th Street apartment ... Russell Brand and Jack Black standing outside the Late Show with David Letterman ... and Whoopi Goldberg protesting Proposition 8 outside a Mormon church on Columbus Avenue.

Ethan Hawke turns 38 today. Mike Nichols, director, four-time divorcé, and husband of Diane Sawyer, is 77. Sally Field is 62. California's First Lady, Maria Shriver, is 53. Michael Cunningham, the author of The Hours, is 56. TV host Catherine Crier is 54. Actress Kelly Rutherford is 40. Rebecca Romijn is 36. Thandie Newton is 36. Taryn Manning is 30. And your favorite former Manhattan Borough President, Ruth Messinger, celebrates her 68th birthday today.

♦ Narciso Rodriguez was the man of the hour at Bergdorf Goodman last night, where he celebrated the launch of his new coffee table book with guests like Julianna Margulies (left), Jessica Alba, Linda Fargo, Reed Krakoff, Virginia Smith, Roopal Patel, Jim Gold, Isabel and Ruben Toledo, Simon Doonan, Hal Rubenstein, Jaime King, Christopher Wheeldon, Dani Stahl, Linda Wells, Mickey Boardman, Patti Scialfa, and, his dad, Narciso Rodriguez Sr. [Paper, PMc, The Daily]

• If nothing else, all this new Heath Ledger investigation press may help generate interest, to the extent that's possible, in the Olsen Twins' coffee table book in which they interview their influences. [Scoop - third item]