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."