On Sunday, Penelope Disick and North West had a joint birthday extravaganza put on in their honour. The colourful unicorn-themed bash was attended by the entire Kardashian-Jenner clan (minus Khloe), who showed up to fete the children and indulge in some unicorn-themed shenanigans. 

Kris Jenner posted on Instagram an image of her and granddaughter Dream, who sported a rainbow-hued unicorn's horn on her head. Jenner decided to opt-out of dressing for the theme, as she sported a stark all-black ensemble that was only accentuated with a pair of gold-mirrored sunglasses and gold Cartier bracelets. 

Kylie Jenner also shared an image of her cradling Stormi, who rested in her mother's arm whilst donning a Gucci ensemble. 

Kim Kardashian was eager to document the festivities through her Instagram story feature, making sure the full grandiosity of the birthday party was showcased to her legions of followers. 

In the video below, a smiling Kanye West can be seen serenading both North and Penelope as they blow out the candles on their separate birthday cakes.