Geri Halliwell stunned drinkers when Mel B dared her to do an impromptu performance of Spice Girls' hit Say You'll Be There in the pub.
Ginger Spice stepped up to the challenge from Scary Spice and walked into a packed pub to treat the customers to an intimate gig of just one song.
In a Twitter conversation with former bandmates Mel B and Melanie Chisholm, Geri talked about the dare and seemed embarrassed at her actions afterwards.
She tweeted: "I'm gonna try to do @OfficialMelB dare tomorrow, god help me!"
Later on Geri, 40, confirmed to Mel B, Mel C, Heidi Klum, Howard Stern and Howie Mandel that she had completed the dare, tweeting: "Did it it's awful!" and posting a link to a YouTube video of the pub sing-song.
In the video, Mi Chico Latino singer Geri can be seen walking into a pub and up to a crowded table of drinkers before breaking into song.
At the end of the line "All that I want from you is the promise you will be there," one man can be heard bantering: "What else do you want?"
After her song, Geri turns to the camera and says: "Done it, Melanie it's your turn."