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Appearing as herself on the HBO series, the 27-year-old will feature as a love interest for one of the show's characters in a three-episode guest spot.
The actress wrote in an email to E! Online: "Entourage is one of my favourite shows, and I'm thrilled. I'm playing myself which can be weird, so I hope I don't PLAY myself!"
Jeffrey Tambor (Arrested Development) is also rumoured to be appearing in the fifth season of Entourage, which premieres in the US this autumn.
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