It's Thursday — you know what that means, M Girls! It's time to combine two of our fave things: Throwback Thursday and a guessing game. Sure, you might know the latest gossip about Laura Marano and Ross Lynch, and you might be up to date with Demi Lovato's latest hair color but can you match the now-celebrity to their then-baby pics?
Take the ultimate celeb knowledge challenge by clicking through the gallery below! How many guesses did you get right? Tell us in the comments!