Britney Spears, 39, is letting her fans in on a little pre-wedding secret: her dress is already being made by one of the biggest designers in the fashion industry! The singer shared a new post to Instagram on Nov. 9 and it included pics and videos of her showing off a light pink off-the-shoulder dress as well as a caption that revealed Donatella Versace is creating what she’ll wear during her upcoming wedding with fiance Sam Asghari, 27.