Pharrell Williams "Happy" / "Marilyn Monroe" (ft. Hans Zimmer) (live on 'SNL')

Pharrell Williams 'Happy' / 'Marilyn Monroe' (ft. Hans Zimmer) (live on 'SNL')
In what must have been a pretty great milestone, producer and performer Pharrell Williams celebrated his 41st birthday with an appearance on Saturday Night Live.

In support of his recent G I R L LP, Pharrell performed the hit song "Happy" with some help from a group of tween dancers. Then he teamed up with Hans Zimmer, who conducted a string section throughout "Marilyn Monroe."

Pharrell continued to wear variations of his comically large hat, which was even poked fun at in a sketch featuring the performer. Watch both performances, along with Pharrell's sketch, below.