Credit: Jamie McCarthy/WireImage

She's back?

Amanda Bynes may have changed her mind about ending her Hollywood career.

On Friday the 24-year-old actress Tweeted "I've unretired." She then plugged an ad for her next flick Easy A, due in theaters September 17.

It's an about-face for Bynes, who announced just a month ago her plans to retire from acting immediately.

"Being an actress isn't as fun as it may seem," she wrote. "If I don't love something anymore, I stop doing it. I don't love acting anymore, so I've stopped doing it."

"I know 24 is a young age to retire but you heard it here first I've #retired," she added.

The star -- who first became famous on Nickelodeon's All That and The Amanda Show -- lent some additional insight behind her supposed decision: "I've never written the movies and tv shows I've been a part of. I've only acted like the characters the producers or directors wanted me to play."