You can have plastic surgery. You can also increase your height. You can take a bone from a certain part of your body, then cut off your leg and reattach it.

But I hope you don't have plastic surgery if you're not particularly ugly. It's natural to skin your parents. After all, it's a big risk, and your whole body will never return to its original natural state. If you make a mistake, you will regret it all your life.