It's no big secret that Leighton Meester is the new brand ambassador for Reebok - we told you the news months ago! Nevertheless, here is the first ad release for the new campaign for Reebok's 'Top Down' trainers. I quite like the retro style of the ads, with Leighton in a swishy skirt, Reeboks and standing next to an old school boombox. The Gossip Girl star launched the ads in New York over the weekend, with the campaign expected to break later this year. [via Just Jared]

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