Pink fans were treated to a surprise of epic girl power proportions on Thursday (May 31), when the "What About Us" singer brought her pal and fellow pop-rock star Gwen Stefani onstage during her Beautiful Trauma World Tour stop in Los Angeles.

During her concert at the Staples Center, Pink invited Stefani onstage where the two put on a rollicking performance of No Doubt frontwoman Stefani's 1995 smash hit, "Just a Girl."

Afterwards, Pink took to Instagram to gush about her friend and music peer.

"Y'all don't even understand how much love I have for this chick, this rocker, this mama, this entrepreneur, this total OG badass that is @gwenstefani," she wrote on the social media app alongside a photo of the two women onstage. "There really aren't any comparisons as far as I’m concerned. Tonight was fun. Thanks friend."

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However, this isn't the first time the two music icons have performed together: At the iHeartRadio Music Festival in Las Vegas back in 2012, Pink joined No Doubt onstage, where she performed "Just a Girl" alongside Stefani for the first time.

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