Destiny's Child had a surprise reunion on Saturday as they performed Michelle Williams' gospel song "Say Yes" at the 30th annual Stellar Awards in Las Vegas, Us Weekly reports.

Beyoncé and Kelly Rowland joined Michelle Williams onstage, opening the performance with a cover of "Alpha and Omega."

The performance was simple and a surprise to fans as they watched the former hit girl-band sensation sing in their matching white blazers.

Back in 2013, Rowland and Williams sang "Single Ladies" and "Independent Woman: Part 1" with Beyoncé at the Super Bowl.

Speculations about a Destiny's Child reunion started Friday evening when Michelle Williams tweeted the hashtags, "#SayYes, #Beyonce and #KellyRowland."

"Finally I can say something! Rumors were true! Destiny's Child was in the building #StellarAwards," musician Ronnie Robertson captioned a video of Saturday's reunion.

Fans can watch the reunion performance on April 5 when the Stellar Gospel Music Awards air on TV One, USA Today reports.

Michelle Williams' "Say Yes" hit is part of her studio album "Journey to Freedom," which was nominated for several awards. The Gospel singer was also nominated for several Stellar awards this year.

But a representative for Beyoncé said rumors about a Destiny's Child tour are "completely false," according to Billboard. "There is absolutely no tour," the rep said.

Meanwhile, Kelly Rowland said reuniting with Destiny's Child is not always about business but just old friends catching up, Latin Post reports.

"The last reunion happened the other day when we all sat down and were just talking and enjoying each other's company. It was awesome," she said.

"Not every time you see Destiny's Child together may be in front of the camera. We still have our bond amongst each other. That's the most beautiful gift Destiny's Child has given me."

Rowland welcomed a baby son Titan with husband Tim Witherspoon back in November.

Beyoncé is also enjoying motherhood with husband Jay Z as they watch their daughter Blue Ivy grow.