At last night's BET Awards, Chris Brown was the big winner ... scoring four awards. However, for the Viewers' Choice Award, Tiffany Green ... a fan who was selected to present the award, accidentally read Brown's name .... then read Rihanna's name. Turns out, Brown was actually the winner!

The video above shows Drake coming on stage to accept the award for he and Rihanna. Awkward. What a total cluster!

As for Chris Brown, he was named best male R&B artist and of course, the Viewers' Choice. Read what Tiffany Brown Tweeted following her screw up ... after the jump.