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.