How to center align pictures without enlarging them?

Okk, well on myspace I know how to center align stuff. <div align=center> Yeah, yeah I know, but still, when I try to do that with images it makes them all fatty and large. How do I center align them without making them huge? Help!

Public Comments

1. Did you forget to put this at the end?</center> Also make sure that your pics are the same length and width.