Kimora Lee Simmons and Djimon Hounsou Separate

It’s over for Djimon Hounsou and Kimora Lee Simmons.

“Djimon Hounsou and Kimora Lee Simmons have officially separated after 5½ years,” the actor’s rep tells PEOPLE exclusively. “Though never married, they have one child together, Kenzo Lee Hounsou, who is 3½ years old.”

Kimora Lee Simmons Announces Her Baby's Name

Kimora Lee Simmons has not disappointed her followers on Twitter.

After announcing the arrival of a son with longtime boyfriend Djimon Hounsou, the Baby Phat CEO on Wednesday followed up with the name of the infant: Kenzo Lee Hounsou.

Filling her 18,000 Twitter mates in on the details, Simmons revealed that baby boy weighed in at 8 lbs. and 20 inches long.

Kimora Lee Simmons, Djimon Hounsou Have a Boy

Kimora Lee Simmons and Djimon Hounsou are the proud parents of a brand new baby boy!

The Baby Phat CEO, 34, announced the big news on Twitter in a post on Saturday that says, “It’s a boy! Thanks to everyone out there for all your well wishes!”

“Both mother and child are doing great,” a rep for Kimora Lee Simmons tells PEOPLE.

Although a name and details of the birth have yet to be released, Simmons promised there will be “more to come” in her Twitter update – and there’s reason to believe she’ll keep her word.

Djimon Hounsou On His Homeless Past: A 'Meager Existence'

Djimon Hounsou may now be enjoying Life in the Fab Lane with girlfriend and reality TV star Kimora Lee Simmons – but life wasn’t always so glam for the In America and Blood Diamond Oscar nominee.

In the early 1980s, when he was in his teens, the African-born future model and actor was a homeless youth in Paris.

“I lived on the streets for some time – fighting for survival, searching out nothing more than my daily necessities for a meager existence,” Hounsou, 44, told a U.S. Senate panel on Tuesday.

Kimora: Djimon Has a Huge ... Billboard

Kimora Lee Simmons is living large – and so is her boyfriend, Djimon Hounsou.

The fashion-designer-turned-reality-star spoke with PEOPLE at Wednesday’s launch of her new fragrance, Fabulosity, and she good-naturedly gushed about the man in her life – and his new Calvin Klein billboard in Hong Kong.

“He’s really big,” Simmons, 32, said of Hounsou’s underwear ad, which Calvin Klein’s reps claims is the largest in Asia. “We were just there when it went up. Isn’t it a great billboard?”

Kimora Lee Simmons & Djimon Hounsou Talk About Romance

Kimora Lee Simmons, who split from husband Russell Simmons last year, wasn’t looking for romance when she met actor Djimon Hounsou she last February, but she found it – and then some.

“I have a lot of hang-ups in life with men. I’m not very trusting,” the model and fashion mogul says in an interview in the February issue of Harper’s Bazaar. “After my breakup, I thought, I don’t need anything. But now I have someone who has the heart, the soul, and the hotness.”

Kimora Lee Simmons and actor beau take daughters out

Media Take Out and Concrete Loop have photos of designer/celebrity-mom Kimora Lee Simmons out in Cannes with her two daughters, Ming Lee Simmons, 7, and Aoki Lee Simmons, 4, strolling along with Kimora’s new beau, Oscar-nominated actor Djimon Hounsou.  Djimon, who first broke out with a role in Amistad and was nominated this

Russell Simmons Okay with Kimora & Djimon

Russell Simmons says he’s just fine with his estranged wife, Kimora Lee Simmons, spending time with Oscar nominee Djimon Hounsou.

“He’s a wonderful guy, a very sweet guy,” Simmons, 49, told PEOPLE Monday at the New York City premiere of HBO’s Life Support. “I want her to be happy no matter what.”

Kimora, 31, and Hounsou, 42, have been spotted getting cozy all over Los Angeles recently, having dinner at Mr. Chow, holding hands at Il Sole and kissing at Hollywood hot spot Winston’s.

Couples Watch

• Oscar nominee Djimon Hounsou and Kimora Lee Simmons, getting cozy all over Los Angeles. On Feb. 27, the pair whispered and stared at one another during a dinner at Beverly Hills eatery Mr. Chow. The following evening, they headed to West Hollywood’s Il Sole, where “they were holding hands, being really sweet to one another,” a source tells us. And on March 1, they hit hip West Hollywood lounge Winston’s, where they were “lovey-dovey.” The pair kissed and snuggled as they chilled at the hot spot.

Cameron Diaz & Djimon Hounsou Get Cozy in L.A.

Cameron Diaz was spotted getting cozy with Blood Diamond Oscar nominee Djimon Hounsou at L.A.’s Hyde Lounge on Thursday.

“It looked like the perfect post-Valentine’s Day date,” a patron tells PEOPLE of the pair, who were with several other friends.

“They were totally vibing each other, lip-on-lip action,” says the source. “Cameron looked so happy… Djimon followed her every move.”