Er, how gorgeous is her mini dress?
Crochet is now back with a bang thanks to the stunning reality star who switched things up in this unusual dove coloured frock which oozed 20s flapper vibes with a tiered skirt and high-neck detail to boot.
Yes, it was transparent in places, but Rosie totally owned the look and managed to avoid an embarrassing, knicker-flashing wardrobe malfunction as she posed up a storm on The Serpentine's windy lido terrace.
No amount of torrential rain was going to stop the fashion-savvy beauty from wearing her favourite Valentino courts which boasted studded straps and a stiletto heel.
Rosie let her dress do all of the talking and left the jewellery to a minimum. She pulled the ensemble together with a snappy, multicoloured, snake effect shoulder bag and ditched the colour-pop lips for a look that was clean, fresh and frankly flawless.
As usual, then!
Fab Ms. Fortescue wasn't the only guest to show her support for Hugo's new Taylor Morris eyewear collection, as Spencer Matthews and even Hugo's his ex-girlfriend Millie Mackintosh made an appearance at the swanky bash.
We love a good reunion!