Katherine Heigl Shows off Her Baby Bump in Tight White Dress

Katherine Heigl is one white-hot mama!

The actress looked stunning while promoting her new show, Doubt, at the CBS, CW, Showtime Summer TCA Party in Los Angeles Wednesday, sporting a tight white dress that accentuated her baby bump.

Heigl, who is currently pregnant with her and husband Josh Kelley's third child, looked positively radiant on the red carpet in her custom Christian Siriano dress as she posed for photos while cradling her bump.

The actress later posted a sweet snap from the event on Twitter, posing alongside her husband as the pair beamed at the camera.

"Had a great day talking about my new show #Doubt," Heigl wrote next to the shot. "So grateful to have @JoshBkelley as my date to the party!"

Had a great day talking about my new show #Doubt So grateful to have @JoshBkelley as my date to the party! pic.twitter.com/KRTagR6Pv2

— Katherine Heigl (@KatieHeigl) August 11, 2016

Heigl and Kelley are already parents to daughters Adalaide Marie Hope, 4 and Naleigh Moon, 7, and Heigl is currently pregnant with a baby boy.

"I feel great," she told Us Weekly of her pregnancy. "And I've had [it] really easy — knock on wood — so far. Just tired and hungry. Really hungry!"

"I have a doughnut problem," she added of her cravings. "I don't know if you've ever been to sets much, but they have craft service and have, like, three boxes of doughnuts every day. I try to take a bite or two — or six! The sugar thing has been really bad. And I'm not generally a sugar person … but if you put a cinnamon roll in front of me, it could get ugly!"

Heigl also dished on how her family is handling her pregnancy, revealing that she's been the recipient of more than a few sweet surprises.

"The other day I came home to a bouquet of flowers and a really sweet note from the kids that I'm sure [Kelley] made them write," the actress shared. "And the other morning he brought me coffee and my breakfast while I was trying to get ready to run off to work early."