Amanda Bynes, 27, briefly posted a number of tweets about Rihanna, 25, before deleting the comments.
The tirade began with Amanda Bynes writing: “@rihanna you look so ugly tryin (sic) to be white,” followed within minutes by a message blaming Rihanna for being assaulted by her ex-boyfriend Chris Brown.
Within two minutes Amanda Bynes had deleted the first post.
Then just a few moments later, she attacked Rihanna again with a reference to Chris Brown’s assault on her in 2009, claiming he did so because the singer was unattractive.
“Chris Brown beat you because you’re not pretty enough,” Amanda Bynes tweeted.
Amanda Bynes then retweeted a post by Rihanna: “Look who came to see me!! My lover Stella McCartney!!!” to which the former actress responded: “No one wants to be your lover so you call everyone and their mother that I almost named my new dog Rihanna.”
Rihanna, who is known for her own feisty temper on Twitter, appeared to address the remarks within minutes of their posting.
“Ya see what happens when they cancel Intervention?” the singer wrote.
Amanda Bynes returned fire accusing the 25-year-old of doing d**gs.
“Unlike ur fugly faced self I don’t do d**gs! U need the intervention dog! I met ur ugly face in person! U aren’t pretty u know it!”
Speculation persists if Amanda Bynes’ unrequited love for Rihanna’s rumored ex-boyfriend and collaborator, rapper Drake, sparked the Twitter attack.
Amanda Bynes’ online infatuation with the musician has been well-documented. She famously tweeted in March she wanted Drake to “murder my va**na”.
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