I have skinny legs and I want to have calves and want them to be nicer and sexier... any tips?

Calf raises to failure will help build muscle in the calf. Stand with your toes on a step and your heels hanging off. Do calf raises until you literally can't do any more and your muscles are burning. Walk around for thirty seconds, and do it again. And repeat. Vary the position of your toes on the step, so sometimes they are pointed in, and sometimes outside.

The first few times you do this, your legs will hurt so much you'll have trouble walking the next day. Calf muscles get a lot of work all the time, so you have to really push beyond the pain barrier to force them to grow.