Justin Timberlake stops concert midway through to help fan with spectacular gender reveal!

Going to a Justin Timberlake concert? Awesome.

Getting him to do your baby's gender reveal in the middle of the show? Priceless.

Yep, one lucky fan managed to enlist the former *NSYNC singer to help reveal the sex of her baby.

At his New York concert last week, Justin - who is dad to son Silas with wife Jessica Biel - fulfilled the wish of the mum-to-be, even stopping his entire show to announce the gender.

Before heading to the gig, Maddie Petrino made a large poster that asked the pop star a simple question: "Justin, gender reveal selfie? Young man or Senorita."

"I noticed that Justin is pretty interactive with his audience," the 31-year-old said, adding that "he’s been known for taking selfies with fans at his concerts and the Super Bowl."

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"I thought why not try to get a picture with Justin holding up my sign that says "it's a girl" once I caught his attention."

"I completely didn't think he would stop the entire show to announce to the whole audience my gender reveal."

But, that's exactly what the star did.

After the concert, Maddie took to Instagram to share the news.

"It’s a girl!!! Thank you so much @justintimberlake for helping me announce. I had the most amazing night," she wrote alongside a video of the moment.

Maddie says she is now trying to convince her husband to give the baby the middle name Justine.

Either way, we're sure this is a story she will definitely tell her daughter one day!