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Guess Who

Courtesy: Showtime

Let the collective awwww start now.

Just look at those innocent smiles in their Sunday best outfits. This is one adorable bunch!

Who would have guessed that years later, these family members would become an American rock band with three No. 1 singles and a Grammy under their belt...

Can you identify these cuties?

Kings of Leon

Steve Granitz/Getty Images

Why it's only Caleb, Jared, Nathan and Matthew Followill, also known as Kings Of Leon!

Shocked? We were too.

Back before the heavy eyeliner and long, dark 'dos, the "Use Somebody" singers seemed like quite the cookie-cutter group of kids. And close, too, which makes sense since they're family and now in a pretty successful band together.

Just make sure to not lash out at them if they decide not to give you rights to their songs, you might get a rant in return.

Actually, as long as you say sorry, everything will be OK.