Jay-Z brought out a highly-anticipated guest performed during his sold-out final performance at Barclays Center this past Saturday. Decked in all-black, booty shorts included, his wife Beyonce surprised about 18,000 concert goers by taking the stage to perform her own brief set. She sang "Crazy in Love," one of her many tracks with a Jay-Z feature.

Either Jay-Z was too distracted by his wife's signature booty dance to the song or overwhelmed at how far they'd come since that track, but he somehow managed to miss his cue for the rap in "Crazy in Love," which Beyonce performed until he realized what had happened. “Oh sh– I should probably rap here," he playfully remarked.

She then performed "Diva," giving a high-energy show with her backup dancers, before wishing her celebrity best friend Gwyneth Paltrow a happy birthday, dropping the mic, and strolling off stage. Beyonce would later grace the stage once more to close out the concert with her husband on "Forever Young." In a witty explanation of his wife's surprise appearance, Jay-Z said, "Of course I had to let BK touch the stage in BK. Well, BKC now.”