Victoria Beckham has been living it up in Miami with her husband David Beckham and their four children, Brooklyn, Romeo, Cruz and Harper this summer – but it's the couple's ten-year-old daughter who appears to be having the most fun!MORE: Harper Beckham gets the blame from dad David - Victoria Beckham reactsTaking to Instagram on Tuesday evening, Victoria posted an adorable video of Harper as the mother-daughter duo enjoyed a meal out at a local sushi restaurant.WATCH: Victoria Beckham treats