Tinashe Performs with Britney Spears at “Britney: Piece of Me” at Planet Hollywood Resort & Casino

Tinashe Performs with Britney Spears at "Britney: Piece of Me" at Planet Hollywood Resort & Casino
Spotted Wednesday night at Britney Spears’ resident headlining show, “Britney: Piece of Me” at The AXIS at Planet Hollywood Resort & Casino in Las Vegas, was singer-songwriter Tinashe (Photo credit: Denise Truscello /WireImage)

In the midst of Britney’s high-energy performance, the “Superlove” singer joined Britney on stage to perform their hit-single, “Slumber Party.” The Billboard Hot 100 song is featured on the pop icon’s ninth studio album, “Glory,” which has received rave reviews from critics and fans alike.

Also seen in the audience Wednesday night were the girls of Bravo’s “Vanderpump Rules” – Stassi Schroeder, Ariana Madix, Brittany Cartwright, Kristen Doute, Scheana Shay and Katie Maloney-Schwartz – to celebrate Brittany’s birthday.

Solidifying “Britney: Piece of Me” as the hottest ticket in town, the show has drawn the attention of celebrities such as Beyoncé, Jay Z, Lady Gaga, Anna Kendrick, Nick Jonas, Miley Cyrus, Chloë Grace Moretz and Calvin Harris.

Britney Spears returned to the stage earlier this month to dazzle audiences with her wildly popular, cutting-edge headlining residency show. The international megastar performs through Feb. 4 at The AXIS at Planet Hollywood Resort & Casino and will return March 22. For more information, please visit BritneyPieceofMe.com.