But tonight, they were enjoying the Billboard Music Awards! We caught up with them on the blue carpet before they went inside to ask them about the upcoming tour and what it was like working with Britney Spears and Demi Lovato on The X Factor.
Check out the video above to hear about the best advice Demi gave them and where they would be if they weren't at the awards tonight.
Want more from the stars at the Billboard Music Awards? Cambio has you covered! We've got the Blue Carpet Arrivals, all the Winners, the best backstage moments and more, so keep checking back for updates!