is one lucky guy! The Grammy award-winning record producer tied the knot with his girlfriend model Helen Lasichanh
on Saturday, Oct. 12, Us Weekly
can confirm. The "Get Lucky" singer and his new bride exchanged vows in Miami, Fla.
The newlyweds were feted by several famous pals, including Usher
and Busta Rhymes
. "Usher and Busta Rhymes did a mini concert at the wedding," a source revealed to Us
"It was so fun," the insider added. "The little concert was amazing. It [was] the most fun wedding I've ever been to."
Williams and Lasichanh are already parents to their 4-year-old-son Rocket
. "[He's the] best song that I've ever co-written," the fashion designer said about his baby boy to TODAY
show host Savannah Guthrie
in August. "It's awesome," he said of his family. "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."