Justin Bieber and Hailey Baldwin headed to what appeared to be a video shoot at the Shrine on Tuesday -- braving the 100-degree LA heatwave. Hailey, in her sports bra and denim cut-offs, had to use the porta-potty and flipped off photographers as she went back into the auditorium to support her hubby. Meanwhile Justin saluted the frontline workers manning the Covid-testing stations at the door, as he and Hailey headed home.