Amanda Bynes went on a vicious, unexplainable Twitter tirade against Rihanna on Sunday. According to TMZ, Bynes posted a series of angry tweets about Rihanna’s looks before promptly deleting them. “Chris Brown beat you because you’re not pretty enough,” she tweeted. “No one wants to be your lover so you call everyone and their mother.”

Rihanna shot back, “Ya see what happens when they cancel Intervention?”

Bynes responded again, “unlike your fugly faced self I don’t do drugs! U need the intervention dog! I met your ugly face in person. U aren’t pretty u know know!”

She deleted that tweet soon after too. See part of the exchange below:

 

o-AMANDA-BYNES-RIHANNA-570

#AmandaBynes

#Rhianna