On Sunday, troubled starlet Amanda Bynes sent a series of hateful tweets to Rihanna, for no apparent reason.

Bynes has already spent the week atop headlines because of her arrest for marijuana possession and her claims that one of the NYPD officers sexually harassed her. Bynes took to twitter to possibly release her anger dealing with her recent issues.

Bynes tweeted, "@rihanna Chris Brown beat you because you're not pretty enough," along with multiple other insults.

However, Rihanna tweeted in response, "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!" All the tweets directed towards Rihanna were later deleted.

Rihanna has not responded to Bynes's latest insult, which is surprising because Rihanna is notorious for Twitter and Instagram fights.

On May 27, Bynes took to Twitter again to set the record straight about the fight, "I saw a bunch of mocked up tweets about me bashing Rihanna in my mentions," she tweeted. "I'm followed by so many people that someone is always mocking up fake tweets so I feel the need to address them! Rihanna and I met and I'm sure we'll be in a music video together one day!"

Bynes also addressed the rumors about her drug use, "I am allergic to marijuana and alcohol but I smoke tobacco. [...] I don't need to go to rehab. There is never a drug or alcohol in my system! I'm sick of all the lies!"