Smh! Amanda Bynes Says Chris Brown Beat Rihanna's A$$ Cause She's Ugly

Amanda Bynes just inexplicably railed on Rihanna on Twitter, saying Chris Brown beat her because she's ugly ... but RiRi got the last word and it was AWESOME.

Bynes tweeted -- and quickly deleted -- "@rihanna Chris Brown beat you because you're not pretty enough."

She followed that up with another insult -- about wanting to name her dog Rihanna. It's unclear what set her off.




RiRi clearly got wind of the deleted tweets, because she just posted the BEST COMEBACK EVER




2 Instagram O's Gone Wrong!

Amanda is busy tryna look like Blac Chyna



While RiRi is showing her coochie crack





SOURCE