READ: Victoria Beckham reveals new product - and fans go wildTaking to Instagram on her big day, the mother-of-four shared photographs of the fabulous bash, which was held at the swanky Sushi Fly Chicken. She was joined by husband David, her son Romeo and his girlfriend Mia Regan and her parents, as well as her youngest son Cruz, friends Dave Grutman, Loren Ridinger and of course, her daughter Harper. WATCH: Victoria Beckham celebrates her birthday in styleLittle Harper looked super cute in her summery floral dress, which came from swish brand BonPoint.