When a singer releases his or her first album ever, it's a pretty big deal. And today just so happens to mark seven years since the one and only Justin Bieber's debut album, My World, came out. The Biebs even took to Twitter to commemorate the special occasion.
In honor of this special anniversary, we decided to take a trip down memory lane and look back on how much singers have totally changed since their first ever albums dropped. They've all truly come so far!
Click through the gallery to see the transformations and then tell us in the comments section below which of these singers is your fave!