Share: Title:Alex & Sierra - Little Do You Know (Video) Duration: 3:05 Plays: 112M views Published: 10 years ago Download MP3 Download MP4 Simillar Videos ▶️ 4:45 The X Factor Usa 2013 - Alex And Sierra's Auditions Toxic 112M views • 11 years ago ▶️ 46:16 All Alex And Sierra Performaces On T X Factor Us 2013 112M views • 10 years ago ▶️ 2:42 Alex & Sierra "gravity" - Live Week 7: Semifinal - The X Factor Usa 2013 112M views • 10 years ago ▶️ 3:05 Little Do You Know || Alex & Sierra (lyrics) 112M views • 5 years ago