Whether it’s wanting to enhance your flat as a pancake rack to an ample bosom or adding collagen to your tiny lips, we’ve seen many celebs go under the knife to stay hot in Hollywood. Today, we look at some of the good, and some of the bad celebrity transformations.

Kylie Jenner. She went from an awkward teenager to Hollywood stunner in a blink of an eye. I suppose when you have a beauty empire you need to look your best!

Oh Michael. It must’ve been hard breaking out of the Jackson 5, and it seems that Michael hit up his plastic surgeon a few too many times.

We all met Courteney Cox as a fresh faced beauty on Friends. It must be hard to stay looking the same for 10 whole years, and Courtenay did not waste any time once the show came off the air. Debuting her new look on Cougar Town, Cox showed us that that MILF is a legit look.

Ashley Tisdale hasn’t dramatically changed but she does have a slimmer nose, compared to the once aquiline bumpy nose she had.

Tori Spelling was quite the looker back in the day. As she got older however, she and her plastic surgeon became besties and her face has changed dramatically.

Ashlee Simpson had to follow in sister Jessica’s steps, and we’ll be the first to admit she is babein’. Ashlee obviously had some issues with her nose, as she has slimmed and shortened it quite  bit.