Hailee Steinfeld, Kelsea Ballerini, Sofia Carson and Jamie Lynn Spears—the latter making a surprise appearance for her big sister—teamed up on Saturday (April 29) at the 2017 Radio Disney Music Awards to honor the Princess of Pop, Britney Spears, with a musical medley.

The pop foursome performed a mashup of some of Spears' greatest career-spanning hits, with Steinfeld covering "Circus," Ballerini covering "Oops!...I Did It Again," Carson covering "...Baby One More Time" and Jamie Lynn covering "Till the World Ends" as the former Mickey Mouse Club Mouseketeer and her mom, Lynne Spears, watched from the audience.

Following the performance, Britney joined the four onstage, where her younger sister presented her with the first ever Radio Disney Icon Award, an award honoring "a distinguished artist whose career transcends popular culture and whose music is loved by generations of Radio Disney fans."

Watch some clips of the performance in the video below, aired on the Disney Channel on Sunday, April 30:

Britney Spears Through the Years: