Are you ready to feel old? Today is Hannah Montana star Mitchel Musso's 23rd birthday! We know what you're thinking — how is it possible that Oliver Oken is well into his 20s now?! Well, just wait until you see what he looks like!
The minute we searched through Mitchel's latest Instagram photos our jaws drop. He's definitely not the same kid we watched act alongside Miley Cyrus anymore. In fact, he's almost unrecognizable!
Since we were so intrigued by Mitchel's transformation, we did a little searching and found more photos of stars looking totally different, too. Click through, then let us know which photos you can hardly recognize in the comments below.