Alex and Sierra

Britney Spears - Toxic (Alex & Sierra cover)

What is Sierra Deaton doing now?

'X Factor' Stars Alex & Sierra Break Up As A Band, Couple

A Great Big World - Say Something (Alex & Sierra cover)

Alex & Sierra - Little Do You Know (Annie LeBlanc & Hayden Summerall Cover)

Alex & Sierra - Little Do You Know (Lyrics)

What happened between Alex and Sierra?

Alex & Sierra - Little Do You Know (Lyrics)

Sara Bareilles - Gravity (Alex & Sierra cover)

Grease - You're the One That I Want (Alex & Sierra cover)

Alex & Sierra - Little Do You Know (Lyrics)

Alex & Sierra - Little Do You Know (Lyrics)

Alex and Sierra Back To You - Lyrics

Alex and Sierra Start to Cry While Singing Bumper Cars - LIVE AT UCF

Alex & Sierra - Animals (Official Music Video)

Alex & Sierra - You Will Find Me (Audio)

Alex and Sierra I Love You - Lyrics

What happened to Alex from Alex and Sierra?

Why did Alex and Sierra break up?

Destiny's Child - Say My Name (Alex & Sierra cover)

Alex & Sierra - 'Little Do You Know' (Exclusive Perez Hilton Acoustic)

Alex & Sierra - Little Do You Know (Robby Burke Bootleg)

Alex & Sierra Gush Over Leona Lewis & Simon Cowell! (X FACTOR FINALE)