Image: Instagram

Wearing matching rainbow robes and swimsuits, North West and Penelope Disick celebrated their birthdays with a unicorn-themed bash on June 3.

The cousins and best friends, North and Penelope, will turn 5 and 6 on June 15 and July 8, respectively.

Kim Kardashian took to Instagram to share sweet snaps of the day on her story and called  the pair “twins”. “Happy birthday ladies,” she said.

Keeping up with the latest in party trends, the kids’ party really brought the mythical creatures to life. From pastel pink and green glazed donuts to horses donning glittering manes and horns, everything from the food to the decor had been made over with an ethereal touch of magic.

Twinning

North and Penelope wore matching rainbow-sequin gowns over their swimming costumes.

Sweet treats

Ice-cream cones, donuts, pretzel wands and cookies were all made to fit the unicorn theme. Even the paper plates had been "unicorn-ified".

The decor

Foliage, flowers and pastel coloured balloons ran across the tables.

The entertainment

What celebrity kid's party is complete without pony rides? However, in true Kardashian style, they took things up a notch, bringing the magical creatures to life by adding manes of glitter and multi-coloured unicorn horns to the mix. 

Kid DJ

Ten year old DJ Livia kept the crowd entertained with her sick beats. 

The cake 

Twin cakes made by Flour Shop stood amid a table of treats. Both were decorated with colourful swirls of icing for the mane, shimmering gold horns, fondant ears and candles.

The grand finale

Once cut, the hollowed out rainbow layered cake's candy-filled centre exploded with a burst of colourful sprinkles.

Cousins

North and Penelope's aunt, beauty mogul and reality TV star, Kylie Jenner, made an appearance with four month old Stormi Webster.