The 'Rehab' singer recently splashed out £35,000 to have her breasts boosted from a 32B to a 32D and is now planning more surgery to improve her appearance further, against the wishes of her loved ones.
A source told Britain's The Sun newspaper: "Everyone tells her there's nothing wrong with her nose. But Amy does nothing by halves. Now she's beaten drugs, plastic surgery must not become her next obsession.
"Since changing her boobs Amy has been scrutinising her body."
It has also been revealed Amy, 26, wants a doll of her made so she can become the next Barbie.
The pop star has been busy sketching designs for the toy which she believes would be a hit with kids, just like the famous blonde doll.
A source said: "She loves all the compliments and wolf whistles she gets from her new figure. She's been sketching lots of drawings of herself and wants to bring out a doll for fans."
Amy's father Mitch recently claimed his daughter decided to have a boob job because she had "saggy" breasts.
He said: "I don't think the boob job was about confidence. I think that when she lost all that weight, the weight never came back on her boobs and they were saggy. So whatever the reason is, she looks great now."