Pharrell Williams tied the knot with model Helen Lasichanh on Saturday!  The couple exchanged vows in Miami, Fla. with a few celebrity pals.

On Oct. 12, Williams, 40, and Lasichanh said "I Do" on a boat named "Never Say Never." Guests included the likes of Usher and Busta Rhymes, according to US Weekly.

"Usher and Busta Rhymes did a mini concert at the wedding," a source told the gossip magazine. "It was so fun. The little concert was amazing. It [was] the most fun wedding I've ever been to."

"Of course they're playing some of [Williams'] hits tonight," another insider added.

The couple has a 4-year-old son together named Rocket. (Check out photos of the wedding here)

Williams is best known for his musical creativity and his outrageous sense of style.  The musician recently opened up to Details magazine about his creative process, and what it's like working with arguably the most talented minds in the music industry today.

"Look, I don't think that I'm strange, but I know I'm definitely strange," Williams told Details. "My process works for me, and it may seem a little . . . I don't know. I mean, I do weirdo s*** like watch Huckleberry Hound at two in the morning eating Corn Pops, you know what I'm saying?"

Williams has worked with the hottest musicians, including Jay Z, Justin Timeberlake, Daft Punk, Robin Thicke, Beyonce and has scored two animated flicks, "Despicable Me" and "Despicable Me 2."  He looks at other artists as vessels filled with creativity, and uses their input to make great music.

"We're not actual creators-we're just vessels, pulling from inspiration," Williams told Details.  "Sometimes it comes from oblivion, sometimes it, like, walks by me. But again, it's not within you. You're just an observer, and your job is like a stenographer-you're capturing things. I'm a recording artist, in all I do."