Britney NOT to perform at the TCA!

LOS ANGELES, Calif. --
Britney Spears will appear on Monday’s Teen Choice Awards, the star announced in an updated post on her Web site.

The site initially announced on Thursday morning that she would perform on the show. Following the initial announcement, a rep for the ceremony told Access Hollywood that the pop princess would not be performing.
However, show reps did confirm Britney will be honored with the Ultimate Choice Award at the show, where she’s nominated for Choice Music: Single, for her song “Circus,” Choice Music: Female Artist and Choice Music: Tour. Britney will break from her European tour to make the ceremony, which airs Monday at 8 PM ET on FOX.

That's messed up. How can you make such a mistake? I know many are disappointed by this. You still can look forward her VMA performance.