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Mary-Kate Olsen , who recently split with her boyfriend Nate Lowman, and her sister Ashley (not pictured) are in London to see fashion shows (including Burberry) and they’re getting some business of their own done. The Olsens visited a North London warehouse for some reason and Mary-Kate looked smart and professional in her asymmetrical layered zipper coat and huge buckle bag. She’s a walking advertisement for her own fashion lines.

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This is how Mariah Carey arrived at her “Forever” fragrance launch party in London: in a customized Ross Royce Phantom with big paintings of Mariah on the sides and “Memories of an Imperfect Angel” written across the top. Nick Cannon wasn’t there to steady her in those towering heels when she climbed out of the vehicle because at that same time he was in New York appearing on MTV’s “It’s On With Alexa Chung.” Nick flashed a big diamond watch and wedding ring. Of course, they were always in touch.

Three generations of Presleys hit the club scene in London this week. Lisa Marie Presley has been in town collaborating and performing with Richard Hawley and she brought along her mom Priscilla and her son Benjamin Keough, 17, (Riley’s brother) for a night on the town. (Lisa looks very strange.) Ben is recording an album and some people think he resembles his grandfather Elvis. We see a LITTLE Elvis in him, but not enough. Priscilla’s kids and grandchildren can do pretty much anything they want, since the money from Elvis’s estate just keeps pouring in.

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We sense that Mickey Rourke is feeling miniscule in this photo taken at a London club called Alto. Mickey arrived with this leggy blonde named Kristina around 1:30 and left two hours later. When they were walking out she tried to link arms with him but he resisted, petulantly saying that he didn’t want to be photographed that way. He walked off ahead of her. It’s amazing what a pair of seven inch platform heels will do to a man.

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How adorable does nineteen year old Taylor Swift look in this photo shoot in Notting Hill in London? The satin cocktail dress and strappy stilettos give her a real supermodel look. While in the UK, she’s already confessed to developing a little crush on Irish singer Danny O’Donoghue from The Script. Who needs Joe Jonas, anyway.

Single and circulating, Leonardo DiCaprio Is all over London on his bicycle. He’s currently filming “Inception “ there with Michael Caine. After a day of riding in Notting Hill, Leo and friends stopped to sample the local cuisine. He just HATES to be noticed.

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You don’t see photos of Jay Leno vacationing at tropical islands or golf resorts. When he’s traveling, it’s usually on weekends from one comedy gig to another. But he’s got the whole summer off before he starts hosting his new talk show in September, so he took his wife Mavis to Europe. Above, they were photographed leaving the theater district in London. Mavis seems to be having a good time.

A close look at Michael Jackson’s press conference reveals that Michael appears to have a few new angles on his face. Those cheekbones! The wig and glasses might be hiding a lot, but he looks livelier and more aware than he has recently. His “This is it! ” concert announcement was featured on the news – did anyone else notice that his voice sounds deeper and more normal and less whispery?

Michael Jackson’s arrival in London to announce a series of concerts there was met with a resounding yawn. Usually his fans are cheering outside his hotel but yesterday there were more press people than fans. And not many of either. Michael and his kids are staying on a whole floor at the Lanesborough and the rest of his entourage of 30 is at the Marriott. The string of summer concerts at an arena are expected to solve Michael’s money problems for awhile. That means tickets will be expensive. Will they sell?

It’s the morning after the premier of “Marley and Me” in chilly London, and Jennifer Aniston put on a tracksuit and a puffy jacket in hopes of having a quiet cup of coffee alone in Notting Hill, without being recognized. But when your photos are as popular as hers are, chances are SOMEONE is snapping you.