She's been 2012's unofficial mascot, hitting up numerous Olympic heats to cheer on Team GB, and the Closing Ceremony was the final event in Kate Middleton's sporting calendar.
Kate joined Prince Harry to watch the action unfold, and she'd chosen a familiar dress for the occasion - the very same blue petal-print Bella dress by Whistles that she wore to the Jubilee concert.
Accessorising the wardrobe favourite perfectly, she added a simple black waist belt and matching satin clutch.
And it seems blue was the shade de rigueur for the night, with Samantha Cameron opting for a silk cobalt-blue shift .
What a stylish night!
By Hayley Spencer