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Effervescent beauty Cat Deeley plays up her sexy side in her new ad campaign for Links of London. The So You Think You Can Dance host, who’s the British jewelry brand’s first Global Ambassador, shows off silver bangles from the Sweetie line’s spring/summer collection (left). “I did a photo shoot with them last month showcasing their newest pieces, which I have already been wearing out and about,” Deeley wrote on her Web site. “My favourites include the black Sweetie watch (which I wore to Carey Mulligan‘s pre-Oscar lunch), and the signature gold bangles, as well as my classic silver and gold charm bracelets, which I have already loaded with charms!” Expect Deeley to appear later this year in Links of London’s fall campaign as well.