American pop band Echosmith, composed of siblings Sydney, Noah, Graham, and Jamie Sierota, skyrocketed to fame when their hit single "Cool Kids" climbed the charts in 2014. The catchy tune peaked at number 13 on the Billboard Hot 100 and still echoes in our playlists today.
Curious to see what these cool kids look like now? Check out their latest photos and see how they've grown!