Victoria Beckham sings on top of a piano in her Twitter photo. Credit: Courtesy of Victoria Beckham

Never give up on the good times, Posh! Victoria Beckham let loose on Saturday, May 10 and showed off her vocal chords. Dressed down from her usual chic style in a T-shirt and sweatpants, the mother of four seemed to be having a great time sitting on top of the grand piano and holding a microphone. 

"I hear there might be a reunion! #captain&tennille x vb," she captioned the photo on Twitter in a nod to the recent split '70s duo Captain and Tenille ("Love Will Keep Us Together"). 

The former Spice Girls member recently celebrated her 40th birthday with her bandmates Melanie Chisholm, Emma Bunton, and Geri Halliwell by her side. 

Though they reunited to perform at the closing ceremony for the 2012 London Olympics, the fashion designer has repeated insisted that will be their final on-stage reunion. 

"I won't ever do it again," she said in Vanity Fair Italy and Spain in January 2014. "Doing the Olympics was an incredible honor. I was so proud to do it, proud to be British. That was a perfect time to say, 'That's great. Thank you to everybody, but no more. Sometimes you've got to know when it's time to leave the party."?