Spice Girls reunite at Victoria Beckham's 50th birthday party

The Spice Girls had a reunion on Saturday and even put on an impromptu performance. The girl group linked up at Victoria Beckham's 50th birthday party, and the fashion designer's husband gave fans a behind-the-scenes look at their reunion.

"Baby Spice" Emma Bunton, "Scary Spice" Melanie Brown, "Sporty Spice" Melanie Chisholm and "Ginger Spice" Geri Halliwell attended the star-studded bash for Beckham, who was known as "Posh Spice" in the pop band.

The group danced to their song "Stop," recreating their old dance moves. Video of the performance posted by David Beckham went viral, raking in more than a million views on Instagram.