Victoria Beckham is never far away from her former alter ego Posh Spice, and on Tuesday evening, the star poked fun at herself by sharing a snap of herself wearing what looked just like the little black Gucci dress from her Spice Girls days.READ: Victoria Beckham's £8 beauty secret that makes her tan really lastAlso sporting a green Bottega Veneta bag, the star pulled her hair up in a messy bun and wrote: "Posh washed up on a Florida beach!"WATCH: Victoria Beckham wows in plunging neckline