See how plastic surgery transformed these celebs - Even before plastic surgery became practically 'de rigueur' among celebrities, there were already plenty of people having work done in search of the perfect figure or a touched-up face. Among A-listers, cosmetic procedures are popular, but how these surgeries turn out varies hugely. Click on the photo gallery to see some notable cases of celebs who went under the knife!

© Getty Images

Michael Jackson - Before: the singer as a teenager in the 70s.

© Getty Images

Michael Jackson - After: in the 1980s, Michael Jackson's skin began to get noticeably paler. His nose also began to change in appearance.

© Getty Images

Michael Jackson - After: the singer suffered vitiligo, but according to his doctor had over 12 cosmetic procedures. He is rumored to have had cheek and chin implants, eyelid lifts and several nose jobs.

© Getty Images

Beyoncé - Before: Beyoncé looks very young here, don't you think?

© Getty Images

Beyoncé - After: rhinoplasty, botox and lip work.

© Getty Images

Renee Zellweger - Before: the actress had had no work done at the beginning of her career.

© Getty Images

Renee Zellweger - After: botox and eyelid lifts.

© Getty Images

Scarlett Johansson - Before: her nose was visibly larger when she was younger.

© Getty Images

Scarlett Johansson - After: the actress denies having had rhinoplasty, though rumors abound.

© Getty Images

Sarah Jessica Parker - Before: the actress had a larger nose.

© Getty Images

Sara Jessica Parker - After: botox, nose job and some aesthetic dentistry.

© Getty Images

Nicki Minaj - Before: the rapper adopted a doll-like look at the beginning of her career, with extravagant outfits and wigs.

© Getty Images

Nicki Minaj - After: nose and lip jobs, as well as breast and buttock implants.

© Getty Images

Donatella Versace - Before: Versace's plastic procedures began in the 1990s.

© Getty Images

Donatella Versace - After: botox in her cheeks, lip fillers, face lift and breast augmentation jobs have completely changed Donatella.

© Getty Images

Megan Fox - Before: she might not admit it, but Megan began her transformation at 17.

© Getty Images

Megan Fox - After: breast implants, botox, cheek and lip fillers, as well as rhinoplasty. She is also rumored to have work done on her eyebrows.

© Getty Images

Celine Dion - Before: in the 1980s, at the beginning of her career.

© Getty Images

Celine Dion - After: rhinoplasty, teeth straightening and whitening.

© Getty Images

George Clooney - Before: the Hollywood hunk has admitetd publicly that he doesn't like wrinkles.

© Getty Images

George Clooney - After: the actor is rumored to have had botox, as well as 'ball ironing'.

© Getty Images

Melanie Griffith - Before: the actress was considered a sex symbol at the beginning of her career.

© Getty Images

Melanie Griffith - After: she has since been criticized for what is often described as excessive plastic surgery.

© Getty Images

Cher - Before: the singer in the 1960s.

© Getty Images

Cher - After: breast implants, nose job and lip fillers.

© Getty Images

Paris Hilton - Before: the socialite was averse to going under the knife.

© Getty Images

Paris Hilton - After: she denies having had work done, despite her breasts appearing visibly larger and her face wrinkle-free.

© Getty Images

Sylvester Stallone - Before: Sly in the 70s.

© Getty Images

Sylvester Stallone - After: the actor admits that he has had botox, lip fillers and other work done on his face.

© Getty Images

Meg Ryan - Before: the darling of many 80s and 90s rom-coms.

© Getty Images

Meg Ryan - After: botox, lip fillers and other work on her face.

© Getty Images

Britney Spears - Before: as a teenager, before succumbing to plastic surgery.

© Getty Images

Britney Spears - After: as well as breast implants, Britney is said to have had lip fillers, liposuction and botox.

© Getty Images

Kim Kardashian - Before: the only work Kim admits having done on her face is botox. In this photo, you can see how her eyes and nose look different.

© Getty Images

Kim Kardashian - After: rhinoplasty with larger cheeks and lips, as well as botox for wrinkles.

© Getty Images

Kim Kardashian - Before: Kim is rumored to have spent $100,00 on modifying her body.

© Getty Images

Kim Kardashian - After: Kim appears drastically different, having had liposuction, breast and buttock implants.

© Getty Images