It's a baby boy!

Kimora Lee Simmons gave birth to her first child with financier husband Tim Leissner — her fourth overall — a rep for the designer confirms to 'People.'

“We are filled with joy, adoration and gratitude as we celebrate the birth of our son,” the couple said in a statement.

Though the announcement didn't specify the exact birth date, it did reveal the little boy's name: Wolfe Lee Leissner.

kimora lee simmons

Kimora and her three kids in 2013.

The 39-year-old is already mom to daughters Ming, 15, and Aoki, 12, with ex-husband Russell Simmons and a five-year-old son, Kenzo, with Djimon Hounsou.

Congrats to the happy couple!