Over the years, we've shown yearbook photos and have asked readers to guess which rock stars they turned out to be. Some of these musicians' looks changed dramatically since their school days, while others are more instantly recognizable.

Here we present a number of these yearbook pics in one video montage. You'll see the yearbook photos of Kurt Cobain, Tommy Lee, Axl Rose, Nikki Sixx and many more.

Check out the yearbook pics of 15 rock stars in the video above.