Super producer, Pharrell is known for his youthful looks. And, apparently, he is also very much a kid at heart, as evident in his Sponge Bob Squarepants themed 41st birthday party. Friday night (April 4), The Neptunes producer took over Cipriani Wall Street in NYC turning it into Bikini Bottom, complete with décor and characters from the beloved Nickelodeon cartoon. Guest included Swizz Beatz, his wifa Alicia Keys, Chanel Iman, Russell Simmons, Angela Simmons, and Mashonda. The event was soundtracked by Q-Tip who was on the 1s and 2s. Peep the gallery of photos, above.