The former X Factor contestant gave us all leg envy in this denim mini skirt which featured the cutest pockets and a number of copper buttons down the front.
And because we're seriously eagled eyed when it comes to celeb attire, we've found out that you can grab a match from Topshop for a very cool £28 - YAY.
We're also loving the Western vibe of Diana's top which boasted a v-shaped neckline, Aztec print embroidery and two red tassels.
The style obsessive t bought the unique blouse which she tucked into her teeny tiny mini skirt from Sister Jane and we have a feeling it's going to become your festival fashion saviour this summer.
Di brought the look together with a pair of slouchy, brown patent boots and posed up a storm at the bash where she mingled with pals Bip Ling and Charli XCX who took to the decks later on in the evening.
The star channelled her inner 70s chick when it came to her long blonde hair which was styled into a classic centre parting and softened with feathered ends. She matched her pout to her blouse and rocked a slick of coral lipstick that offset her bronzed complexion beautifully.
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