Ashlee Simpson Performs ‘Obsessive’ on the Eve of ‘Bittersweet’ Release

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Today is the release of Ashlee Simpson‘s Bittersweet World, otherwise known as the day you scour her lyrics for references to her amore Pete Wentz. (As if. She is the queen of vague, and you know it.)

On Monday night, she performed her current single, “Little Miss Obsessive,” on “The Tonight Show With Jay Leno.” And no, smart@sses, she didn’t lip-sync. She looked great, but I felt like she was moving too much and too fast for the tempo of the song. See for yourself:

If you haven’t read Ashly’s review of Bittersweet World (it’s real this time, we swear), then get on it.