12/07/2013 13:38 BST | Updated 22/05/2015 06:12 BST

Cara Delevingne &Amp; Poppy Delevingne Are Wild Ones At The Animal Ball In Lancaster House

Poppy and Cara Delevingne were rocking some serious headgear at the Elephant Family Animal Ball in Lancaster House in London. While Cara managed to make an iguana fascinator look super-chic her big sis Poppy was having a hard time keeping her golden mask on at all...

cara delevingne

Even with the eccentric headgear the pair looked flawless as they rubbed shoulders with Jerry Hall, Mario Testino AND the Prince of Wales and Duchess of Cornwall aka Charles and Camilla. Cara was sleek in a simple yet beyond gorgeous black gown and Poppy looked playful in a Eastern-inspired embellished minidress teamed with gold glittery heels.

cara delevingne

Pops and Cara were spotted chatting with Prince Charles over cocktails, and gee whizz, wouldn't we have loved to be a fly on Chaz's button hole for that convo.

Perhaps it went something like this...

Cara: "Hey Charlie, where's your hat?"

Charles: "I leave the fancy dress to Camilla, dear."


Cara: "[Insert inappropriate comment and/or swear word here]."

Check out all the pics from the swanky soiree here...