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

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

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

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“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

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“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.”

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

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

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

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