Pharrell has cartoon-themed birthday bash Instagram Mon-07-Apr-14 16:57 Share this By Steph Monks Pharrell Williams still looks like he’s in his 20s, but he has just turned 41! And to celebrate, he held a birthday party with the coolest theme ever! A SpongeBob SquarePants theme! He had a SpongeBob birthday cake and had people serving food and drinks dressed as full size characters from Bikini Bottom such as Patrick Star and Squidward. You May Also Like Pharrell cries watching the world dancing to 'Happy' Jay-Z buys Pharrell Williams' Billionaire Boys Club line Pharrell is working with Rihanna on a new fashion show Become a fan of The Edge on Facebook and on Twitter .