Credit: Gregg DeGuire/FilmMagic/Getty Images.

Former teen star Amanda Bynes has been charged with two misdemeanor counts of hit and run after allegedly crashing into a car and fleeing the scene twice in the span of five months.

The first hit-and-run occurred on April 10, according to the complaint filed in Los Angeles. The second happened Aug. 4. Bynes is scheduled to appear in court for an arraignment on Sept. 27. The charges carry a maximum sentence of six months in jail and/or a $1,000 fine for each count.

Representatives for Bynes did not immediately respond to ABCNews.com's requests for comment.

It's the latest of Bynes' legal problems: In June, she was charged with driving under the influence after an April 6 arrest, in which she was accused of sideswiping a police car while attempting to make a right-hand turn. She allegedly refused to take a Breathalyzer or drug test at the scene of the accident.

After her lawyer pleaded not guilty on her behalf at the June hearing, Bynes took to Twitter to enlist the help of … President Obama.

"I don't drink," she wrote in a tweet addressed to @BarackObama. "Please fire the cop who arrested me. I also don't hit and run. The end."

Bynes, 26, became a teen idol on the Nickelodeon TV series "All That" and "The Amanda Show." She's appeared in several films since then. But in 2010, she announced on Twitter that she had quit acting because she didn't love it anymore. A month later, she tweeted, "I've unretired," and posted an ad for her most recent film, "Easy A."