Kate and Harry seemed to be having a great time as they danced the night away to the likes of the Spice Girls and George Michael.
She recycled a pretty blue, black, and white print dress from UK High Street store Whistles. It's the silk 'Bella' dress (£150) which Kate wore a few weeks back during the Queen's Jubilee Concert.
The last time Kate wore the dress she had an Alexander McQueen blazer over the top but this time she left the jacket at home and instead added a slim black belt.
Photo credit: WKW