The 27-year-old regretted having had the boob job she infamously flaunted in a photo she posted on Twitter wearing only a bra in May.
"I got my breast implants removed," Bynes confirmed via email to Radar. "They were uncomfortable... I prefer them out."
RadarOnline.com has learned the headline-grabbing ex-Nickelodeon star went under the knife in early June to try and return to a more natural look -- an A cup.
But she suffered a post-surgery complication, a source revealed.
"A tube got lodged in her breast and Amanda was in pain," an insider close to Bynes revealed. "But she is much better now and even told me, 'They look amazing without the implants!'"
Undeterred by the bad experience, she's not done with her body enhancements and has booked yet another procedure -- this time, on her nose -- for this Saturday.
"The change in her nose has made Amanda feel so more confident," the source said.
"She's become addicted to the confidence each surgery gives her... She bemoaned that she she stopped working because she was so vain that she didn't like how her nose was looking on camera."
Describing herself as previously looking "hideous" and feeling "insecure" because of her nose, the What I Like About You star told the pal that her next procedure is to shave down "the bone that forms the bridge of my nose."
And she said she won't start her music career -- Bynes is working with Waka Flocka Flame -- until the surgeries on her nose are complete.
"She can't wait to start making music videos when her nose is finished," the source added.
Bynes was arrested in New York on May 23 in connection with criminal possession of marijuana, reckless endangerment and tampering with physical evidence after allegedly throwing a bong out the window of her apartment.