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"From the editors of Us Weekly, this LIMITED EDITION SPECIAL offers everything the Twilight fan wants and more. The Sexy Stars of Twilight Eclipse features 7 huge posters and 160 stunning photos! In addition, the issue includes interviews with the stars — Robert, Kristen, Taylor, and Boo Boo — as well as behind-the-scenes secrets. Release date is sometime late in May."
P.s. No, I don't think this is available in the UK except special import - for the Twilight and New Moon editions, I got mine in the US.
It is currently on pre-order at Borders, which I'm assuming can be shipped internationally.
And, yes, I want a KStew poster too *hmpf*