Article continues below advertisementKimora Lee Simmons is more vulnerable than ever in her return to reality TV.During the Wednesday, December 3, episode of TODAY With Jenna & Friends, the fashion designer, 50, opened up about giving birth to her first child with ex-husband Russell Simmons at age 25.Simmons joked that she was too young in 2000 and not yet ready to become a mom.Article continues below advertisementSource: TODAY With Jenna & Friends/YouTubeKimora Lee Simmons guest-starred on 'TODAY With Jenna & Friends.'"I was like a child bride," she teased.