The seemingly unprovoked attack against Jay-Z was immediately deleted from her account, but not before some of her followers had a chance to respond. Jay-Z, however, has not commented.
"Wow. Rude Amanda!" one Twitter user wrote. "I wish I knew what your thought process was behind this," another person tweeted in response to her post.
Bynes has been making headlines recently for her erratic behavior and trouble with law including a DUI arrest and two hit-and-run charges. She also reportedly moved out of her NYC apartment last week after the building's management threatened to evict her. An insider told Us Weekly that Bynes left Marlboro Light cigarette butts and dirty Q-tips behind after moving into a downtown Manhattan hotel.
But the former Nickelodeon star told Us last November that she is not a "troubled" starlet. "I'm 26, a multi-millionaire, retired," she said. "Please respect my privacy."