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Kate Bosworth and Demi Lovato turned out to the grand opening of Topshop’s Los Angeles Topman store at The Grove, where The X Factor judge celebrated one of her favorite clothing brands. Celebrities at the British brand’s soireé enjoyed a photo booth in the shape of a traditional red telephone box, among other novelties, and Bosworth, a loyal fan of the brand’s streetwear-inspired designs, fêted a capsule collection she curated just for the two-story Hollywood location.

See more this week’s biggest parties below!

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