Ariana Grande & Iggy Azalea perform ‘Problem’ at Wango Tango...

For the first time, Iggy Azalea joined Ariana Grande on stage for their smash single 'Problem,' which debuted at #3 on the Billboard Hot 100 this week. Yesterday's Wango Tango concert saw Ariana rock a monochrome leather ensemble, which she also wears in the upcoming music video. Having Iggy on stage also gave fans a glimpse of what to look forward to when those very visuals finally premiere.

Her 15-minute set included hit singles 'The Way' and 'Right There' with Big Sean. As for the performance itself, somebody must have told her that she is too wooden on stage because this era, she's been trying to showcase some stage presence, and while I will admit she has some way to go, it's still an improvement from what we've seen in the past.