Kim Kardashian checked her emails and texts while relaxing on a boat off the coast of Miami today. Kourtney joined her teeny-bikini wearing sister for the luxurious afternoon in the sun, though the new mom kept her post-baby body covered up. The girls also hit up the gym in the morning and clearly all the hard workouts are paying off. Kim has been in FL for most of the week amid more rumors that there's trouble in her relationship with Reggie Bush. Kourtney's own controversial man Scott wasn't seen out with the ladies, though the sisters have been spending time with one of their mutual loves — baby Mason and his adorable faces.

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Brad Pitt lifted Shiloh onto a boat in Venice on Saturday.

Penelope Cruz and Javier Bardem laughed together at the Lakers Game in LA on Friday night.

Jennifer Aniston raised her hands on the set of her new film in Beverly Hills on Friday.

Jennifer Aniston made her first appearance on the set of Just Go With It in LA on Friday. She joined Adam Sandler, who had SI Swimsuit Issue cover girl Brooklyn Decker on the other arm as they exited L'Ermitage Beverly Hills Hotel. Another of their blond costars, Heidi Montag, filmed her cameo in not very much clothing earlier in the week while Jennifer was still off promoting The Bounty Hunter in NYC. That movie hit theaters last night, but Jennifer was already hard at work on her next project before the box office results are even in.

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Kourtney and Kim Kardashian were once again joined by baby Mason yesterday for a busy day of work in Miami. The sisters are currently shooting Kourtney and Khloe Take Miami and though Kim's not officially on the show she seems to be filling in while Khloe makes a trip to LA. After Kim and Kourtney's promotional appearance at Walgreens the pair packed up their designer bags and headed over to Dash boutique — grabbing a lift in an SUV instead of Kim's Maserati. Mason stayed bundled up in his bassinet during their outing, but we got a glimpse of his sweet smile earlier this week when he went shopping with the girls.

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Britney Spears grabbed an orange soda and coffee in LA on Friday.