Ubisoft released Michael Jackson: The Experience for Kinect back in April, but they're just now getting around to offering up the usual avatar tie-ins. You can adorn your avatar in duds based on Michael Jackson's most popular music videos, including Beat It, Billie Jean, Black or White, Leave Me Alone, Smooth Criminal, They Don't Care About Us, and Thriller. If you have a female avatar, you can even wear the Thriller Girlfriend outfit.
Each of these outfits are available here for "only" 400 Microsoft Points. That's $5 for a purely virtual costume, when there are plenty of great XBLA games available for the same amount. Needless to say, only hardcore MJ fans need apply. Oh, and there's also an avatar prop of Bubbles, Michael Jackson's pet chimpanzee, if you have some need to simulate Jackson's weird lifestyle.