Jessica Biel was seen breaking it down in Montreal last month while her hubby performed on stage as part of his 20/20 World Experience Tour—the evidence of which was captured on camera by one very sneaky fan. As Timberlake brought sexy back, showing off his best moves atop a structure on the stage, Biel danced below her man, grooving along to his hit tune "Take Back the Night." At one point, it even looks like Justin glanced down at his doting wife as she throws her arms up in the air and boogies along to the music.