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Celebrity photos: Girls Aloud’s Nicola Roberts is known for enjoying a party or two, and this week she tweeted a photo of her truly letting her hair down – and even stealing a friend’s hat!

Spotted: Celebs in pics (18-25May)

Take a look back at the best photo-shoots, pap shots and Twitpics of the celebs from the past week. Includes Peter Andre and Cheryl Cole.

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