Peaches Geldof's great New York experiment has ended in shambles. She's divorcing her American Green Card-securing hubby, is rumored to be shacking up with a new fellow, and is maybe moving back to London.

• There was no shortage of drama at the Grammys last night. Chris Brown and Rihanna were both no-shows after Brown was arrested for allegedly assaulting the R&B singer. Usher failed to appear, too, flying down to Brazil to be with his wife, who suffered complications from a plastic surgery operation. One person who did make it to the show was M.I.A., who performed on stage with Jay-Z, Lil Wayne, T.I., and Kanye West despite being nine months pregnant. [NYP, People, EW]
• Courtenay Semel says she's been cut off by her dad, former Yahoo CEO Terry Semel, and is now trying to land a reality show to pay the bills. [NYP]
• Salman Rushdie's new girlfriend is Pia Glenn, who's 29 years his junior. [R&M]
• Peaches Geldof and rocker Max Drummey are said to be divorcing after just six months of marriage. [The Sun]

♦ Mary-Kate Olsen was "acting very oddly" during her stay in Miami for Art Basel. After getting into a fight with Kirsten Dunst at a party at the Delano on Wednesday night, MK—who "looked like she had not brushed her hair in a week"—spent the weekend drinking, chain-smoking, and hanging out with boyfriend Nate Lowman, which means she's probably not pregnant. [P6, P6]
♦ Lindsay Lohan went to a party for Milk without Samantha Ronson last week, where she was spotted nuzzling with Sean Penn. [Fox 411]
♦ Amy Winehouse's husband Blake Fielder-Civil is reportedly threatening to write a tell-all book about Winehouse unless she gives him $1.7 million in the divorce settlement. [NYP]

♦ Madonna's neighbors in her Central Park West building aren't happy that she has turned her seventh-floor apartment into a music studio. (It was originally supposed to be an office for Guy Ritchie.) Now she stays up all night blaring music and practicing for her shows. [NYDN]
♦ Alex Rodriguez is thinking of following Madonna on tour next month when she plans to make stops in Brazil, Chile, and Argentina. [R&M]
♦ Is Jennifer Aniston secretly leaking pregnancy and marriage rumors about herself to the tabloids as a way to steal attention away from Brangelina? [MSNBC]
♦ Friends of Padma Lakshmi want everyone to know she is not a gold digger. She's a "hard-working, self-made woman" who just happens to only date extremely wealthy, older men. [P6]
♦ Peaches Geldof and Max Drummey's 97-day-old marriage may already be on the rocks. [The Sun]