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OK, it's official: alien chic is totally the look of spring.

Sure, there isn't an egg in sight, but Katy Perry nevertheless followed in the well-heeled hatched footsteps of Lady Gaga for her new music video, which, after plenty of teases, premiered in full online this morning.

Of course, with a song titled "E.T.," it's not as though she could veer too far from the spacey theme. Plus, Katy's vid has the added bonus of a floating, spinning Kanye West.

Oh, and a bare bottom (cheeky!). But you've gotta watch to the end to find out whose.