{blackbabes} Caught in the Act!

• Newlyweds Hilary Duff and Mike Comrie were in the mood to party – so the duo hit up L.A.'s Trousdale Lounge, where they sat in the main room at a VIP table surrounded by friends. The group danced all night and sipped vodka and champagne. Also at the club? Mary-Kate Olsen, who was hanging out (separately) in the back room with friends.

• Katie Holmes spent a rainy day shopping in Toronto's tony Yorkville neighborhood with daughters Suri and Isabella during a break from filming The Kennedys. The ladies hit up a Starbucks and, despite getting "drenched as they walked in and out of the store," visited GapKids and also spent some time at Anthropologie, a source tells us. In spite of the rain, it was a successful trip. "By the time they went home," the source says, "they were carrying several big, white bags."

• Kendra Wilkinson had a ladies' night out with friends at LIV Nightclub in Miami. The starlet drank vodka cocktails and danced into the wee hours of the morning. "Kendra didn't sit down once," an onlooker says. "She loved being out and dancing." Across the room, Kevin Federline and girlfriend Victoria Prince were "getting hot and heavy," the onlooker says of the duo, who ate strawberries and sipped champagne at their table.

• Janet Jackson spent more than $200 on tea at the newly opened Kusmi store on New York's Upper East Side. The singer stopped in with her assistant, and told shopkeepers that she loved the diet green and chocolate teas, which she first tried in Paris.

• Kelly Osbourne and a male friend took a break from the intense heat at L.A.'s Sunset Junction to (briefly) visit the Army Navy Surplus Store. Kelly followed her friend, a tall boy with long, shoulder-length blonde hair, as he tried on a few hats.

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