Ashlee Simpson gets KO'ed

Taking her punches this time in a boxing ring, Ashlee Simpson plays a pugilist à la Hilary Swank's "Million Dollar" character, and to help channel a bit of Maggie Fitzgerald's fighting spirit, the singer shot the clip at the same facility used in the movie. She also took a few crash-course boxing lessons, where she found her previous experience as a dancer came in handy. "I had one day of training, and right now," on the second day of shooting, "I'm one sore beyotch," she joked.

Below is a sneak peek at Ashlee Simpson's "Invisible" music video from yesterday's TRL.  It's in black-and-white and directed by Marc Webb (Ashlee's "Boyfriend," Hilary Duff's "Wake Up").  Dare I say I like "Wake Up" better?  More "Invisible" screencaps in the gallery!  Also after the jump are pictures of Ashlee's appearance yesterday on MTV's TRL Summer Sizzle!

UPDATE :: You can now watch the full Ashlee Simpson "Invisible" music video below.