Kimora Lee Simmons is a married woman! The 38-year-old former model and fashion designer secretly wed boyfriend Tim Leissner, according to her ex-husband Russell Simmons. Russell spilled the beans on Twitter after a rumor started claiming that Kimora was dating rapper Birdman, who posted an Instagram picture of the two.

"S/O @OfficialKimora luv of my life. Thank u 4 everything u did and do 4 me RICHGIRL RICHGANG," he captioned the photo.

The suspicious caption led many people to believe that the "Life in the Fab Lane" star and the rapper were a couple but Russell was quick to shut the rumors down.

"All of us love @OfficalKimora but the fact is she is happily married," he wrote. "Tim has been family for a while now."

Kimora and Leissner, an investment banker at Goldman Sachs, were first linked last year, following her split from her second husband, actor Djimon Hounsou. The couple was recently spotted on Christmas Day last year walking the beach together in St. Barts with her three children (Kimora has a son, Kenzo, 4 with Hounsou and two daughters, Ming, 14, and Aoki, 11, with Russell).

In March, the fashion mogul told the Daily Mail that she wasn't dating anyone at the time.

"I'm not with anyone at the moment - it's just my kids and their two dads I guess," she said.

When asked what caused her split from Hounsou, the TV personality danced around the question giving a vague response.

"Relationships do change throughout the course of your life and I always think in terms of relationships changing and evolving rather than starting and stopping," she said. "Kids never go away from your life and if you've been married, that person probably never goes either. You never get rid of anyone and they never really get rid of you!"

Kimora has yet to confirm her marriage to Tim Leissner.