It's two days since Knox Leon and Vivienne Marcheline Jolie-Pitt were welcomed into the world by Brad and Angelina and it's been just as low-key as everyone expected. The mayor of Nice, Christian Estrosi, signed the birth certificate at a press conference; now the discussion has turned to pics of the babies, which are expected to fetch $15 to $20 million. [People, NYDN]
In A-Rod news, Scott Boras, the agent Alex Rodriguez dumped last year, is now trying to negotiate a truce between the slugger and his estranged wife. [NYDN]
Amy Winehouse must have some sort of bladder problem, because she went to the ladies room 14 times during a three-hour show in London. Meanwhile, her dad is telling fans to stop giving his daughter cigarettes because they could kill her. With all due respect, Mr. Winehouse, you may have bigger things to worry about. [Mirror, NYDN]
Kimora Lee Simmons may be trying to get pregnant with Djimon Hounsou via in-vitro fertilization. [NYDN]
Casey Johnson and Courtenay Semel made an appearance at a party in Beverly Hills, where they held hands and talked about taking a vacation. [Page Six]
Josh Brolin and Jeffrey Wright were arrested during a barroom brawl in Shreveport, Louisiana on Saturday morning. They were both in town to film an Oliver Stone flick. [People]
A staffer at 303 Gallery was fired last week after she didn't recognize a scruffy-looking Marc Jacobs and asked him to leave. [Page Six]
Just a few weeks ago Liv Tyler said she was hoping to reconcile with hubby Royston Langden. Now he's hired a divorce attorney and she's temporarily fleeing to LA. [Janet Charlton]
Heidi Fleiss has been charged with using meth and possessing the painkiller hydrocodone and says she's planning on entering rehab next week. [E!]
Jennifer Lopez is supposedly training for a triathalon in October. [Hollyscoop]
Rosie O'Donnell's partner, Kelli Carpenter, took a trip to Europe by herself, but Rosie's reps say that doesn't mean the couple is on the outs. [Page Six]
Lindsay Lohan's girlfriend, Sam Ronson, has finally changed her Facebook relationship status to "In a relationship." [NYDN]
After three years of dating, Emily Blunt and Michael Bublé have split up. [People]
Hugh Hefner's youngest girlfriend Kendra Wilkinson might be leaving the mansion because she doesn't get along with the other girls, and resents Hef's rules against dating other men and keeping curfew. [Page Six]
For the second year in a row, Miss USA fell down during the Miss Universe pageant. [ET]
Blind item: "Which pervy cad about town has yet another weird penchant ... for edible underwear? He makes all of his ladies wear a specially made licorice thong that he likes to slowly chew off of them." [NYDN]