• Say it isn't so! Although she's introducing her own spray-tan line, Sevin Nyne, Lindsay Lohan has been spotted using the services of a mobile spray-tan company called Fake Bake "on the sly." [NYDN]
• Related: LiLo would like to reiterate that she and Sam Ronson have not broken up. For now. [E!]
• The indignity! Jay-Z had to wait 20 minutes for a table at Babbo. [P6]
• Chelsea Clinton's rep says the former first daughter is not getting married after all. Too bad! [Us]
• Paris Hilton's little brother Barron says he's "giving up the party life" to pursue a career as an "international singer-songwriter." A family just chock full of talent, clearly. [P6]

New beginnings can be heartbreaking: John Mayer's new breakup song sounds ridiculous and transparent, but Paris Hilton's brother's new life plan is even worse. Way worse.

Blogs, Facebook, and Twitter were supposed to liberate famous people from old-media gatekeepers. But John Mayer, Courtney Love, and others are teaching us that public figures are terrible at shaping their own image.

• The Jeremy Piven sushi drama just won't quit. Piven's dispute with producers over his decision to leave the cast of Speed-the-Plow will now be heard by an arbitrator in June. But Piven doesn't seem too worried: He says he's "looking forward to testifying," since President Obama recently described mercury poisoning as "the world's gravest chemical problem." [Reuters, Us, TMZ]
• Sean Penn and Natalie Portman were supposedly spotted "making out" at the Sunset Tower Hotel earlier this month. At least that's what the Star says. [Star]
• Are David Duchovny and Tea Leoni getting back together? They were spotted "canoodling" on the beach in Mustique. [NYDN]
• Scarlett Johansson is on a "rigid diet" at the moment. She's also the "new muse" of Moet & Chandon, just so you know. [P6, WWD]

• Things aren't looking up for Damon Dash. He's lost a fortune recently and is buried under a mountain of debt. Now it looks like he's losing his wife, too: Rachel Roy just slapped the hip hop mogul with divorce papers. [NYDN]
• David Letterman and his longtime girlfriend Regina Lasko got married last week. [NYP, Us]
• Courtenay Semel, daughter of media mogul Terry Semel and occasional girlfriend of Casey Johnson, has checked into rehab. [P6]
• The real reason behind Jen Aniston and John Mayer's split? Jen was supposedly sick of his "obsession" with Twitter. Naturally. [Sun, Telegraph]

It turns out using Twitter will not get you laid. Actress Jennifer Aniston reportedly dumped musician John Mayer over his habit of broadcasting his every idle thought on the microblogging service. Hurray!

• Not such good news for Kanye West: He was charged with misdemeanor battery, grand theft and vandalism yesterday in connection with the fight he had with a bunch of photographers at LAX back in September. He could face up to 2 1/2 years in jail if convicted, although that's highly unlikely. And since they're not felony charges, he isn't expected to appear in court when he's arraigned on April 14. [NYDN, LAT, AP]
• Mariah Carey and Nick Cannon are supposedly planning a massive—but totally top-secret!—second wedding, just in time for their one-year anniversary in April. But please don't tell anyone. [In Touch]
• James Franco is having a hard time moving around the Columbia University campus now that so many of his fans have figured out his class schedule. [P6]
• John Mayer's rep says he is not writing a tell-all book about Jennifer Aniston, despite what you may have read in Star. [MSNBC]

• 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]

Bad couple day: Robert Pattinson's Tina Fey lust would be inappropriate, except she started it; there's a conspiracy against the Rihanna-Chris Brown reunion; and John Mayer maybe dumped Jennifer Aniston.

• If you've noticed Jennifer Aniston's hair looking even more perfect and shiny lately, it's not your imagination. She reportedly spent $50,000 to have her hairstylist accompany her around the world for the Marley & Me's premieres. [DM, P6]
• Britney Spears kicked off her first tour in five years with a concert in New Orleans last night. The early reviews have not been positive, in case you're wondering. [People, DM, MTV]
• Did Chris Brown and Rihanna secretly tie the knot at Diddy's Miami manse? That's what Star is claiming, since Rihanna is "looking for the husband-and-two-kids deal before she turns 25." [Star]
• Breaking! Oprah has adopted a new puppy! [Us]
• Jennifer Lopez borrowed $50,000 worth of jewelry to attend an event last week, but never gave it back. [P6]

• Get the welcome wagon ready: Jennifer Aniston may be moving to New York soon, both to be closer to John Mayer and because she's filming her next two movies here. [Fox 411]
• A bunch of people who attended Madonna, Demi Moore and Ashton Kutcher's Oscars party at Guy Oseary's house ended up leaving early and heading over to the more popular Vanity Fair bash instead. Kate Winslet screamed "Wooo!" at everyone who congratulated her (and later tripped down a small set of steps), a tipsy Natalie Portman flirted with Twilight's Robert Pattinson, and Mick Jagger chatted up every woman that came within two feet of him. [P6, NYDN, E!, Mirror]
• Madonna looked conspicuously wrinkle-free while squiring Jesus Luz around LA last weekend and eventually ran into Sean Penn on Sunday night. After congratulating him on his Oscar win, he pointed in Luz's direction and replied, "Thanks. Another kid already?" [NYDN, DS, Sun]
• Nicky Hilton placed a homeless man under "citizen's arrest" after he pushed her on to the ground outside an IHOP. Seriously. [Us]

• Jennifer Aniston and John Mayer made their first awards show appearance together at last night's Oscars, sitting just 12 seats away from Angelina Jolie and Brad Pitt, although they managed to avoid a run-in by skipping the red carpet and showing up at different pre-show parties over the weekend. [People, NYDN]
• Uma Thurman, Darren Aronofsky, Rachel Weisz, Natalie Portman, and Daniel Craig all skipped out of the show early to head over to the Vanity Fair bash, where Graydon Carter invited Chesley Sullenberger and his wife Lori as surprise guests. [LAT, P6]
• Penelope Cruz and Tom Cruise had an awkward encounter at CAA head Bryan Lourd's house party on Friday night, while Oprah and Gayle King held court at Barry Diller and Diane von Furstenberg's pre-Oscars bash, and everyone "partied like it was 1999" at Harvey Weinstein's gathering. [P6, P6, Fox 411]
• At the Spirit Awards on Saturday, Mickey Rourke "playfully mauled" Rachel Weisz and "made a grab" at Jessica Alba's chest. [People, NYDN]
• A full list of Oscar winners, in case you missed the action last night. [People]

• Hope you're sitting down for this one. Donald Trump Jr. and his wife Vanessa had a baby yesterday. It was a boy. And he will now bear a burden for the rest of his life: His parents named him Donald J. Trump III. [People]
• Lindsay Lohan is launching a self-tanning line called Stay Gold. Finally! [NYDN]
• "Real Housewife" Bethenny Frankel was spotted using coupons at a hair salon. [P6]
• After dating for about half a century, Harrison Ford and Calista Flockhart may finally be ready to get hitched. [Cindy Adams]
• Please note that Walter Cronkite is not related to social/art scenester Kipton Cronkite, despite his claims to the contrary. [P6]

· E! reports that Zac Efron and Vanessa Hudgens will be among the performers to help nurture this year's Oscar renaissance, hopefully teaming for a Best Picture reenactment of Slumdog Millionaire's romantic latrine-escape sequence.

Giorgio Armani celebrated the opening of his new Fifth Avenue flagship last night with a party at the store. The designer was accompanied by his niece Roberta Armani; guests on hand included Leonardo DiCaprio (left), Carine Roitfeld, Victoria Beckham, Martin Scorsese, Michael Bloomberg, Caroline Kennedy, Joel Klein, Cindi Leive, Fern Mallis, Andre Leon Talley, Ricky Martin, Rachel Zoe, Nina Garcia, John Mayer, Mario Testino, Josh Hartnett, Liam Neeson, Richard Meier, Alicia Keys, Chace Crawford, Milla Jovovich, Thom Browne, Kevin Liles, Molly Sims, Mira Sorvino and Christopher Backus, Sally Singer, David Hershkovits, Jim Moore, Hal Rubenstein, Patrick McCarthy, Emile Hirsch, Natalia Vodianova, Zani Gugelmann, Kate Lanphear, Horacio Silva, January Jones, Elsa Pataky, Zoe Saldana, Solange Knowles, Marcus Schenkenberg, and Olivia Palermo. [PMc, Wireimage, Vogue UK, FWD, NYM]

• Madonna is supposedly furious with Alex Rodriguez for returning to his ex-wife Cynthia after the steroid scandal broke a few days ago; we're guessing she won't be too happy with the pics of A-Rod partying with a group of girls in the Bahamas the weekend before, either. [NYDN, NYP]
• Mandy Moore and Ryan Adams are engaged. [People, P6]
• Cops will reinterview Rihanna and Chris Brown in the coming days. [NYDN]
• Mort Zuckerman had a nice, long, expensive lunch at the Four Seasons right after slashing benefits at the Daily News. [P6]
• Prince Harry has been ordered to undergo "sensitivity training." [People]

John Mayer gifts at a 15-year-old level; Prince Harry still offends every non-white person he encounters and Sarah Jessica Parker will always be saddled with cheap jokes. It's arrested development.

She's old now too. It was her 40th birthday over the weekend, and her heartbreaker/lovemaker boyfriend Johny Mayer sang "Happy Birthday" to the actress at her bday bash. Tom Hanks was there!

• Olivia Palermo and Whitney Port are "horrified" that MTV producers have been pressuring them to get into a physical fight at "work" for an upcoming episode on The City and they've even threatened to walk off the set if they're forced to participate. How principled! [P6]
• Lindsay Lohan "stomped around" and "caused chaos" after finding out she'd have to sit in economy on a flight home from Tampa on Saturday. (She also told a friend to "come and visit me back there in case I die.") Horrified flight attendants eventually found her a seat up front. [Fox News]
• Things seem to be heating up between Madonna and Jesus Luz. Also, she took the model to brunch at Macelleria on Sunday, so you know. [DM, NYDN]
• It looks like Julie Janklow's new paramour is none other than surfer Scott Murphy, who split with Marci Klein back in December. [P6, previously]