cbrown030111_01_X17WM230.jpgChris Brown hasn't been at the Grammy Awards since February 8, 2009 ... when he attended with then-girlfriend Rihanna.

It was after that award show that the couple got into the infamous fight in the front seat of his Lamborghini.

The 22-year-old singer, who is scheduled to appear at the annual awards show, is nominated for three Grammys including Best R&B album.

As for RiRi, she's up for four Grammys .... Loud is up for Album of the Year.

All eyes will definitely be on these two former lovebirds to see if sparks fly once again.