Since announcing her pregnancy, Blake Lively has been wrapping up her baby bump in oversized jumpers and knitted ponchos from her lifestyle website Preserve.
But the former Gossip Girl star opted for a more daring maternity look as she took to the red carpet on Monday night.
The blonde beauty, 27, showed off her blossoming bump in a plunging yellow Gucci gown.
The dress, embellished with silver crystals, is from the Italian fashion house's Cruise 2015 collection, but it likely to have been tailored to fit the star's bump.
Blake was attending the Angel Ball in New York with husband Ryan Reynolds, 37.
Understandably, Ryan couldn't keep his eyes off his beautiful wife, and stood with his arm protectively wrapped around her.
"Ryan was really sweet throughout the whole night," an eyewitness inside the event told E! News. "He was rubbing her shoulders, putting his arms around her and when Blake got up, he got up.
"They were smiling with each other and he kissed her on her cheek at one point. He also touched her belly."
Blake and Ryan, who celebrated their second wedding anniversary last month, announced their pregnancy news on 6 October.
And already the handsome actor, 37, has been talking baby names.
"I don't want a name that's anything pretentious, or, like Hollywood-y. So I'm going with Excalibur Anaconda Reynolds… that's if it's a girl ," Ryan joked with Canada's eTalk. And if it's a boy? "Bruce Jenner," he replied.
Blake has also spoken of her excitement ahead of the baby's arrival. "(Motherhood) is something I've always wanted ever since I was a little girl," the star told US Weekly.
"I never knew what I wanted to do for a living, but I knew I wanted to have a lot of kids because I had come from a big family, so it was always important to me."