Amanda Bynes' behavior just keeps getting stranger. On Sunday, May 26, the 27-year-old star took a jab at Rihanna by posting some horrible messages on Twitter. "You look so ugly trying to be white," Bynes tweeted out of the blue.
Referring to Chris Brown's infamous assault on the "Diamonds" singer back in 2009, Bynes said, "Chris Brown beat you because you're not pretty enough." She continued, "No one wants to be your lover so you call everyone and their mother that I almost named my new dog Rihanna."
Responding to Bynes' mean messages, Rihanna tweeted, "Ya see what happens when they cancel Intervention." Bynes later fired back, saying, "Unlike ur fugly 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!"
Bynes already deleted those offensive tweets. It is still unclear why the former Nickelodeon star hated the Barbadian singer that much.
It's not the first time Bynes ranted about other celebs on Twitter. Earlier this month, Bynes argued with Jenny McCarthy after the 40-year-old star said that cops were on Bynes' house to help the troubled star. Bynes reacted, "You're ugly! Police weren't at my house old lady! Shut the f**k up!"
She added, "I need help? What are u talking about? Aren't u 50 years old? I'm 27, u look 80 compared to me! Why are you talking about me?"