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Bruce Wasserstein has been keeping busy. In between splitting up with his third wife and marrying his fourth, he found the time to have a baby with a recent Columbia Business School grad, with whom he's now sharing custody of a 10-month-old girl. [P6]
• The LAPD have launched an investigation into who leaked a confidential photo of a battered and bruised Rihanna to TMZ. [TMZ, E!]
• Whitney Port said this week that Olivia Palermo can be "very difficult to worth with," and that she occasionally wants to "slap her." Join the club. [AH]
• Madonna is reportedly planning to use the Vanity Fair Oscar party on Sunday to introduce Jesus Luz to the world as her new boyfriend. [OK!]
• Portia De Rossi is reportedly preparing to undergo IVF so she and Ellen DeGeneres can have a baby. [SFGate]

• Mary-Kate Olsen went to Mischa Barton's party on Tuesday but left right before Ashley got there; this apparently means the duo are feuding. [NYDN]
• Lindsay Lohan and Lily Allen went out partying together in LA this week and ended up getting matching tattoos on their fingers. [DM]
• Angelina Jolie has been "driving all of the high-end jewelers of New York crazy," looking for a $20 million diamond necklace for the Oscars. [OK!]
Kanye West's new girlfriend, Amber Rose, is a former nude model. [NYDN]
• White House decorator Michael Smith threw Desiree Rogers a lunch at the Four Seasons yesterday. [P6]
• Michael Lohan is trying to stage yet another publicity-stunt boxing match, this time at the Philadelphia Airport Ramada. Classy. [OK!]
• Victoria Beckham's denim line is getting dropped from Saks. [P6]
• Jake Gyllenhaal spent four hours at Fred Leighton last week, although there's no word on whether he left with anything for Reese. [OK!]
Slumdog Millionaire's Freida Pinto and Dev Patel might be dating. [Sun]
• Rumor has it that President Obama is obsessed with playing BrickBreaker on his Blackberry. [Star]
• Good news: Lance Armstrong got his $10,000 stolen bike back. [TMZ]
• "Real Housewife" Jill Zarin was overheard talking about her upcoming boob-lift at a Fashion Week party. Thanks for sharing. [NYDN]