Justin Bieber got pretty emotional when he hit the stage at the MTV VMAs in LA on Sunday. The singer performed his brand-new song, "What Do You Mean," and as he wrapped up his performance, he seemed to start crying. While the crowd cheered, Justin covered his face with his hands, then bent over as he caught his breath, shaking his head. Miley Cyrus's reaction really summed it up: "Wow!" The singer may have been emotional over the support of the crowd, or maybe he was overcome because this week's performance marked his first return to the VMAs stage since 2010. In any case, keep reading for pictures, GIFs, and Vines from Justin's tearful VMAs moment, then watch his full performance and get a second look at his new 'do.