Alex and Sierra

Find out all the winners of your favorite TV singing competitions.

Just in time for St. Patrick's Day, Alex & Sierra dish on their lucky charms, pre-show ritual, superstitions and more.

Alex & Sierra talk the surprises fans can expect on tour, their favorite songs to perform live and what it was like to write with John Legend.

Alex & Sierra and Andy Grammer decided to perform a mashup of each other's songs and the results are killer.

One lucky music fan had a major dream come true when she got to spend the day with Alex and Sierra!

For the third week in a row, Alex & Sierra's 'Little Do You Know' have snagged the No. 1 spot on the Top 10 Video Countdown!

If you need proof of your favorite artist's staying power, just check the results of this week's Top 10 Video Countdown!

Alex and Sierra are officially the new champs of the Top 10 Video Countdown. Vote for next week's winners here!

On the eve of their debut album release, Alex & Sierra have shared the music video for their next single titled 'Little Do You Know.' The single appears on their album 'It's About Us' which will be released tomorrow, Oct. 7.

We handed over the reigns of the PopCrush Twitter account to Alex & Sierra. See the highlights here!