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She's back! And yup, Jennifer Lawrence is covered in blue body paint and pretty much naked to play Mystique in X-Men: Days of Future Past.

A quick teaser was posted on Instagram yesterday, and the 11-second clip gives us a peek at most of the characters, including J. Law, Halle Berry, Hugh Jackman, Nicholas Hoult and Michael Fassbender.

@xmenmovies uploaded the snippet and wrote, "Watch this exclusive X-Men: Days of Future Past sneak peek & stay tuned for the world premiere of the full trailer on Oct 29 ... Join director Bryan Singer for a Twitter chat on Oct 28 #AskSinger."

X-Men: Days of Future Past hits theaters in May of 2014, but the official trailer will be released next Tuesday ... cant wait! Check out the video below: