Jennifer Lopez handled a wardrobe malfunction mid-concert like a pro after her shimmering gold skirt ended up "On the Floor."

While ringing in her 56th birthday at a concert stop in Warsaw, Poland, on July 24, Jenny from the block let out a yelp after her skirt dropped to the floor during a crowd rendition of "Happy Birthday." Promptly after the mishap, the pop star smiled and strutted around the stage.

"I'm out here in my underwear," she said.

Lopez then tossed the skirt into the audience.

"I'm glad I had underwear on," she said at the end of the song. "I don't usually wear underwear." Then, later, to the fan who caught the garment: "Yes! You can keep it. You can have it. I don't want it back."

The moment unfolds around the two minute mark of the video above.

The show, held at PGE Narodow, is part of Lopez's ongoing Up All Night Live Tour, launched on July 8 in Spain, and her first in six years. She originally planned to return to the stage with the This Is Me ... Live Tour last summer, but canceled the run amid reports of low ticket sales and separation from Ben Affleck. The former couple's divorce was finalized earlier this year.

"I was so devastated to let anybody down, but I just needed to be with my kids and myself and really dig down deep into things that were happening in my life," she told Nikki Glaser for Interview Magazine. "And I’m glad I did, because it was a really difficult time for me. Probably the hardest time of my life, but it was also the best time because I got to do that work on myself."