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Like Rihanna, Lindsay Lohan and other famous women before her, Amanda Bynes has reached a new Twitter frontier: She's gone topless for the social media site. On Wednesday, May 1, one day after sharing several lingerie-clad selfies, the 27-year-old actress pushed the envelope even further. Posing in her bathroom, the "All That" star wears just black lingerie bottoms, torn fishnet stockings, gold watch and a gold bracelet as she grins, sans top, for the camera.

PHOTOS: Amanda Bynes through the years

"Rawr!" Bynes writes, covering her breasts with her arms. In a second iPhone photo, Bynes sits on her bathroom sink, with her blonde tresses (shaved bald on the left side) covering her up. "Long hair don't care," she wrote.

PHOTOS: Amanda and others stars' mugshots

Although Bynes look svelte, with toned abs and legs, she recently shared that she'd like to slim down. "I weigh 135," she wrote on Tuesday. "I need to be 100 lbs!"

PHOTOS: Child stars then and now

The "What I Like About You" star has been based in NYC since last year.


Amanda's strangest tweets

Bynes shaves half her head

Did these stars grow up too fast?