The baby, whose name wasn't reported, is Owen's second. He has a 3-year-old son, Ford, with former girlfriend Jade Duell.
The pregnancy news was reported in October while Lindqvist was in the midst of a divorce from her plastic surgeon husband. She said she didn't plan to pursue a relationship with Owen despite the pregnancy.
"She is just happy that Owen is helping her out any way that he can," a source told E! News at the time the pregnancy news broke. "They have an amicable relationship and [care about] what's best for their unborn child."