Ariana Grande & Nicki Minaj Team Up for 'Bang Bang' at iHeartRadio Music Festival 2014!

Ariana Grande and Nicki Minaj share a fun moment on stage together at the 2014 iHeartRadio Music Festival on Friday (September 19) at the MGM Grand Garden Arena in Las Vegas.

The 21-year-old singer made a surprise appearance on stage during Nicki‘s set to perform their hit song “Bang Bang,” sadly without Jessie J though.

PHOTOS: Check out the latest pics of Ariana Grande

Ariana just announced her tour dates earlier in the week and she had to add a second show to New York City’s Madison Square Garden because of the high demand!

15+ pictures inside of Ariana Grande and Nicki Minaj at the concert…