Here's an artist collaboration I never saw coming! Ariana Grande and Barbara Streisand! Apparently after Ariana headlined the final night of Lollapooza in Chicago over the weekend, she got pedicures with Barbara Streisand! Then, she came out for a guest duet at Streisand's show at Chicago's United Center on Tuesday night. The duo performed Streisand's song "No More Tears (Enough Is Enough) to a very very excited Chicago crowd. She posted on Instagram that it was "the best night of my life". Ariana also said "I'm gonna go pass out. You're just gonna find 10 pounds of hair!
Check out video of the performance!