The "Splash" alum is expecting the baby with football player Hank Baskett, according to Us Weekly.
The 28-year-old, who married Baskett in June 2009, is already mom to Hank Baskett IV, almost 4, and is about eight weeks along, the site reported.
"She and Hank have been planning a second baby for a while and they are very excited," a source told the mag.
The reality star paved her way to fame as one of Playboy honcho
She announced in August that she and Bakett were planning for a second child and would showcase their decision in this season of "Kendra On Top."
"We're at that point in our lives where everywhere we look, we're 100%," Wilkinson told
In teasers of the show, which also premiered in September, Wilkinson revealed that she suffered a stroke after a car accident she got into in the spring, and she and Baskett discussed the possibility of having an open marriage. But all seems well now, and the open-marriage notion turned out to just be a joke.
"We trust each other to go out and have a good time and joke around about someone being cute, but nothing beyond that," she told HLN. "We're very traditional people. We live in a traditional marriage but with a fun twist. We have lifelong expectations, and we know what makes us happy — each other and our son. And we push every day to make ourselves happy.
"We're not ashamed to put Little Hank to sleep and go to the club. It might kick us in the butt tomorrow, but we're celebrating a friend's birthday with performers and Champagne. Hank is a little more serious and conservative; he comes from a very traditional background. He loves me for who I am, and I bring a little spark to his life. He questions me every day, 'Who is this woman I married?' Open marriage is something we'd never do, but we joke about it on the show."
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