Ariana Grande joins Barbra Streisand for duet at United Center concert

CHICAGO -- What a dream team! Barbra Streisand was joined by Ariana Grande Tuesday night center stage at the United Center in Chicago.

They performed "No More Tears - Enough Is Enough," a disco hit for Streisand and Donna Summer in 1979.

The divas of different generations got a standing ovation. Grande was already in Chicago after starring at Lollapalooza on Sunday night.

After the show, the singers posted pictures together on their social media accounts.