ET spoke with the mother-daughter duo at the Hallmark Channel and Hallmark Movies & Mysteries winter Television Critics Association red carpet at Tournament House in Pasadena, Calif. on Saturday, where they talked about working together.
"I loved that she was there with me and she did a fantastic job. We had a good time together," Candace told ET's Katie Krause about starring with her daughter in the Hallmark movie Switching Christmas.
"I mean, she's a tough co-star," Natasha joked. "I'm kidding, she's great."
As for looking practically like twins on the carpet, both are flattered with comparisons to one another. "I think she's stunning so obviously I appreciate the compliment," Natasha said about her youthful mom.
"For someone to compare me to a 19 year old, it makes me so happy," the 41-year-old quipped.
Natasha also has a milestone birthday coming up this year: the big 2-0. But don't tell mom that!
"You're breaking my heart!" she exclaimed. "It's setting in! It's her last year of being a teenager! That's hurting! It's hurting me right now."
"We call him the baby whisperer!" Candace gushed about the dad-to-be. "He's so fantastic with kids -- he has been with the shows we've been on but even if we're at family parties, hanging out, the kids gravitate towards him and he loves it and he's amazing with them! He's going to be the best dad!"
For more on Stamos' baby news, watch the video below!