The announcement was made by Orly Adelson, president of dick clark productions.
This will mark Rihanna's fourth time performing on the AMAs. She joins a lineup of previously announced acts including Diddy-Dirty Money, Ne-Yo, Bon Jovi, P!nk, Christina Aguilera, Justin Bieber, Katy Perry, Ke$ha and Usher.
Rihanna is nominated for an AMA in the Soul/Rhythm & Blues category for Favorite Female Artist.
The prize presentation is to be broadcast live from the NOKIA Theatre L.A. LIVE Nov. 21 on ABC.
