CELEB GPS: Kelly Osbourne at Katsuya, Mary Kate & Ashley Olsen at the Met and More

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From NYC to LA, ET’s got the lead on where the stars are on this edition of Celeb GPS!

Kelly Osbourne, along with Nicky Hilton and Wee Mat were spotted leaving Katsuya last night in Hollywood.

Katie Cassidy was seen in NYC yesterday entering her trailer on the set of the ABC pilot 'Georgetown.'

Mary Kate Olsen, Ashley Olsen and Claudia Schiffer all arrived at the Metropolitan Opera House last night in NYC for the premiere of Rossini’s Le Comte Ory.

Click on the video to see the stars in action!