Sabrina Carpenter treated fans to an unforgettable surprise during her concert in Los Angeles.

On Friday evening, November 15, Christina Aguilera made an unexpected appearance at Carpenter’s latest Short and sweet tour stop.

The two iconic singers treated the crowd to epic renditions of Aguilera’s hits Ain’t no other man And What a girl wants.

Aguilera, 43, and the Espresso hitmaker, both sporting blonde locks styled in silky curls that fall over their shoulders, paired in all-black outfits.

Aguilera showed off her slimmed-down figure in a busty black corset and shorts, adding thigh-high, sparkling silver boots that glittered under the stage lights.

She completed her look with a sparkling diamond necklace and chandelier earrings.

Carpenter, 25, for her part, rocked a sultry black ensemble. The Please, please chart topper stepped out in black lace capris, Mary Jane shoes and a shimmering black robe that caught the light as she performed.

This wasn’t the first time the two stars had worked together; earlier this year they reunited for a special performance during the 25th anniversary celebration of Aguilera’s self-titled debut album, Christina Aguilera.

In addition to this surprise duet, Carpenter will headline two more shows this weekend at the Kia Forum in Inglewood on Saturday and Sunday.