Mariah Carey had a very Mariah moment at Global Citizen Festival

She took the stage after sunset Saturday at the annual music concert in Central Park


wearing a see-through Rani Zakhem mermaid gown with a plunging neckline, bejeweled with 10,000 Swarovski crystals


Five minutes into her performance, the superstar singer paused to ask for some touch-ups as the crowd looked around in confusion


“Can I get a glam moment? ... It's weird, but it's OK," she asked before her team took to the stage with a hairbrush, a hand fan and makeup brushes


“I’m supposed to walk to the piano, but I’m trying to get the right lighting," Carey told the crowd. "Anyone who’s ever been to one of my shows knows that I accept nothing but the utmost tippity-tip-tip-top of the lighting.”


“So why did they have me rehearsing during the daytime?”


Her throwback hits “We Belong Together,” “Always Be My Baby” and “Obsessed” were crowd-pleasers


She also celebrated the 25th anniversary for her "Butterfly" album and spoke on international issues