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Katy Perry, who's been working out like crazy lately in order to look spectacular in her wedding photos, showed off a slimmed down figure in a strapless dress in Beverly Hills yesterday.

The I Kissed A Girl singer, who's set to wed fiance Russell Brand in a cermony in India, where he first proposed, at the end of the year, is celebrating after her new single, California Gurls (featuring Snoop Dogg) has been getting tons of airplay.

Even Katy's cartoon cover for the single looks slimmer, too:

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