Pharrell, Helen Lasichanh Tie the Knot in Star-Studded Wedding

Robin Thicke, Usher and many more attended the nuptials.

Pharell Williams and his longtime girlfriend Helen Lasichanh tied the knot this weekend in Miami, Florida. The couple, already parents to four-year-old son Rocket, reportedly celebrated their nuptials with dozens of celebrity pals, including Jay Z, Robin Thicke and Gwen Stefani. The newlyweds were even treated to a "mini-concert" by Usher and Buster Rymes

"It was so fun. The little concert was amazing. It [was] the most fun wedding I've ever been to," a source shares. "Of course they're playing some of [Williams'] hits tonight," another insider added.

Williams and Lasichanh have kept their relationship of five years relatively low key, but the hitmaker recently confessed on the Today Show about his connection with Lasichanh, "It's awesome.  I can't tell anyone what to do. I can't give anyone relationship advice. But the bestie thing is awesome. Every night is like a sleepover."

Indeed, the couple reportedly tied the knot in a secret ceremony in August, but waited until October 12 for a more lavish ceremony and reception at the National Tropical Botanical Garden in Miami's Coconut Grove.

Congratulations to the happy couple!