Friendship never ends! Victoria Beckham celebrated her 50th birthday alongside her family and close friends, including her former girl group, the Spice Girls. Victoria's husband, David, shared a video of the impromptu performance with Geri Halliwell, Emma Bunton, Melanie Brown and Melanie Chisholm. The ladies did their iconic dance moves while singing their hit, 'Stop.' Victoria's big night ended with a piggyback ride from her hubby as they exited the venue.