The singer muscles her way through London after a visit to the gym. Plus: Reese & Jake, Jennifer Lopez, Gwen Stefani and more
Credit: George Pimentel/WireImage
Published: Monday Mar 31, 2008 | 04:00 PM EDT
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From the runway ... to retail! Lauren Conrad is hands-on Friday, launching her newest collection with an event at Toronto's Holt Renfrew department store.
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