Michelle Williams, Kelly Rowland and Beyonce -- all wearing white outfits -- reunited in Las Vegas to sing "Say Yes" together as a group.
Die-hard fans speculated that a reunion may be coming sooner rather than later when Williams posted a cryptic tweet on March 27 evening.
"I thank all of you guys who voted! Man this is incredible!!!!" she had written.
The girl group sang "Bootylicious," "Independent Women Part 1" and "Single Ladies".
"When three good girlfriends are together, you're free and you don't care who's around. You're just trying to catch up and be goofy. I had a blast," Williams said after the performance.