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Celebrity photos: David Walliams was keen to celebrate Roald Dahl’s birthday, dressing up as the BFG. He tweeted this picture of himself in character alongside the caption: “Me as the BFG with Roald's widow, the wonderful Liccy Dahl. Don't forget Dahl dress-up day is September 28th.”

Spotted: Celebs in Twitpics (7-14Sept)

Take a look back over the best celebrity Twitpics from the past week. Includes Tulisa and Victoria Beckham.

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