Amanda bynes rihanna

Amanda Bynes Slams
Rihanna on Twitter,
Calls Her Ugly

WireImage

Woah, we’re not sure what set her off, but Amanda Bynes went on a full-blown rant against Rihanna on Twitter this afternoon, telling the singer that “Chris Brown beat you because you’re not pretty enough.”

Exclusive: Photographer Details Amanda Bynes' Drug Use Before Her Arrest

The troubled 27-year-old – who has met Rihanna in the past – then followed that up with another insult (that sort of rhymed): “@rihanna no one wants to be your lover so you call everyone and their mother that I almost named my new dog Rihanna.”

Exclusive: Amanda Bynes Goes Wig Shopping, Gets in a Car Accident

But just then Amanda – who was arrested for possession of marijuana, reckless endangerment and attempted evidence tampering on May 23 – quickly deleted the Tweets, but not before Rihanna found out about them. And she had a sizzling comeback: “Ya see what happens when they cancel Intervention?”

Rihanna's Dad Wants Her to Reunite With Chris Brown

A short while later the troubled Easy A star responded with, “unlike ur ugly faced self I don’t do drugs! U need the intervention dog! I met ur ugly face in person! U aren’t pretty u know it!” But then she quickly deleted that message too.