An army of A-listers showed to last night's 69th annual American Ballet Theatre spring gala (and, if they were lucky, got a glimpse of Michelle Obama dressed in a black Alaia dress and Thakoon jacket). Among those in attendance: Anna Wintour, Carolina and Reinaldo Herrera, Chuck Schumer, Christine and Steve Schwarzman, David and Julia Koch, Caroline Kennedy and Ed Schlossberg, Calvin Klein, Francisco Costa, Ivanka Trump, Caryn and Jeff Zucker, Annette and Matt Lauer, Al Roker and Deborah Roberts, Lorne Michaels, Desiree Rogers, Claire Danes and Hugh Dancy, Renee Zellweger, Sigourney Weaver, Tory Burch, Iman, Grace Hightower, Rachel Roy, Robbie Myers, Hamish Bowles, Renee Fleming, Lisa Perry, Muffie Potter Aston, Amanda Brooks, Peter and Jamee Gregory, Yvonne Force Villareal, Marina Rust Connor, Marjorie Gubelmann, Nina Griscom and Leonel Piraino, Karen and Richard LeFrak, Blaine Trump, Harry Evans, Hilary Rhoda, Coco Rocha, Mariska Hargitay, Lindsay Price, Kim Raver, Ruben Toledo and Isabel Toledo, Dree Hemingway, Gillian and Sylvester Miniter, and Kelly Ripa and husband Mark Consuelos (left), a former dancer himself. [PMc, Wireimage, Style.com]

• Lindsay Lohan certainly had an eventful weekend. After a judge issued a warrant for her arrest on Friday, Lindsay had a meltdown on Twitter and ended up in a fight with Sam Ronson that was so intense, the cops had to be called. It's not over yet: She's scheduled to appear in court today, although she may not show. [People, Gawker, TMZ, NYP]
• Olivia Palermo isn't making friends in her Tribeca apartment building. She strutted past the people gathered in the lobby last Thursday "completely oblivious" to the fact that one of the building's apartments was on fire. [P6]
• Gwyneth Paltrow and her trainer Tracy Anderson are having trouble finding people to pay $4,500 to join their new Tribeca gym. What a surprise. [P6]

• Guess John Mayer didn't buy Jennifer Aniston an engagement ring after all. It's now rumored Mayer ended the relationship right around the time Aniston got back from her world promotional tour for Marley & Me. [E!, Us]
• Tim Gunn supposedly has a "secret crush" on Anderson Cooper. He says he's been trying to set up a lunch date with the CNN anchor for more than a year now, but it hasn't happened. Yet! [OK!]
• Mandy Moore and Ryan Adams got married on Tuesday in Savannah. [Us]
• Breaking! Katie Holmes has long hair again! [DM]

♦ Hockey star/former Vogue intern Sean Avery was suspended from the NHL indefinitely yesterday following "inappropriate public comments" about ex-girlfriend Elisha Cuthbert. "It's become like a common thing in the NHL for guys to fall in love with my sloppy seconds," he said referring to Cuthbert's relationship with fellow hockey player Dion Phaneuf. [NYP]
♦ Britney Spears celebrated her birthday and album release yesterday by lip-synching her way through a performance on GMA and then heading off to Tenjune, where she partied with the likes of Heidi Klum and Lance Bass. The comeback may be short-lived: She's still abusing prescription drugs and is "plagued by insomnia and shaking fits," at least according to the Star. [The Sun, ThisIsLondon, Star]
♦ Blake Fielder-Civil, Amy Winehouse's estranged husband, just got out of prison. But now it looks like a return trip is in store. [Mirror, Daily Mail]

♦ 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]

♦ The Ashley Dupre press bonanza begins: In her first print interview with People, which hits newsstands on Friday (the same day she'll appear on 20/20), Dupre says she's just a "normal girl" who has "a lot of depth," and that she feels sorry for Silda Spitzer, but doesn't blame herself for Eliot's downfall. [People, NYP]
♦ Are Gwyneth Paltrow and Chris Martin splitting up? The two have spent very little time together since this summer, and now she's become "very good friends" with Fontainebleau hotel owner Jeff Soffer. Gwynnie reportedly spent time with Soffer (and his Bentley and yacht) this past weekend in Miami. [P6]
♦ Britney Spears is supposedly dating a 27-year-old model named Marco D'Angelo who she met through friends in Las Vegas. [Star]
♦ It looks like Anne Hathaway is attracted to lovable losers, since people who know her new boyfriend, actor Adam Shulman, say he's an "opportunist" who "went after all the heiresses" when he was a student at Brown. [P6]

Blaine Trump is a well-known socialite, but more importantly she is the angry ex-wife of philandering Robert Trump (younger brother of The Donald).