Even more excited about the possibility of a second baby? Her 4-year-old daughter, Harper.
"She puts more pressure on me than anyone!" Thiessen told the online magazine, Sweden with Love. "Every day, she begs me to have a baby. She can’t wait to turn into a little mommy. She’s ready!"
Thiessen, 40, is hoping she can make that a reality sooner rather than later. The "White Collar" actress and her husband, Brady Smith, are "definitely trying."
"With Harper it happened right away," she said, adding that she doesn't think she's currently pregnant. "I’m hoping it’ll be as easy this time around."
There are other exciting things coming down the pike for the actress too. Thiessen, an avid gardener who has a chicken coop in her backyard, will begin filming a new show for the Cooking Channel, "Dinner at Tiffani's," later this year, and she's also gearing up to send Harper off to her last year of preschool.
"I’ve loved so much that I’ve been able to spend basically every day with her. Even when I’ve been working, she’s come to work with me," she said. "She’s going to be in school until 3 p.m., and that’s a long time for me to be away from her. I suspect I’ll pull her out once in a while."
Still, Harper, whom Thiessen described as "high-spirited girl," certainly has a mind of her own, her mom added.
"She knows what she wants, and that can be challenging at times. But I don’t ever want to quash her spirit or change the fact that she’s a strong-willed little kid," she said. "We have boundaries and we have rules, but we’re not crazy strict. We want her to grow up to be both a respectful and happy person."