On Sunday evening, the 46-year-old singer and 34-year-old actress made their first public appearance since announcing they're expecting their fourth cild, a girl, later this year. Lopilato shimmered in a long-sleeved royal blue sequinned mini dress by Nadine Merabi, while Bublé proudly cradled her growing baby bump for photographers.
The couple, who were married in 2011, share three children already, sons, Noah, 8, and Elias, 6, and 3-year-old daughter Vida.
Photos of the couple were met with praise from fans who thought the two made a "stunning couple."
"Luisana's dress is everything," one follower wrote. "They're both glowing. I love how happy they look. Congratulations you two!"
"You guys are too cute," a fan told the singer.
"Aw, Lu looks amazing with her baby bump," a fan wrote.
Bublê and Lopilato publicly announced their pregnancy back in February in a music video for the song "I'll Never Not Love You."
In a later interview on "The View," Bublé shared his son Elias's hilarious reaction to the news that he has another sibling on the way.
"We told the kids on Christmas Eve. And we told them, 'Mommy has a baby in her tummy. You're going to have a little brother or sister,'" he explained. "And my 6-year-old Eli was distraught. We said, 'What's wrong?' And he said, 'Why didn't you invite us to watch when you fell in love and you made the baby?'"
"And I still — I still don't know how to answer the question," Bublé said, laughing. "Because obviously, they have no concept about how physically it happens. It's really cute, it's just so sweet — they just know that mommies and daddies fall in love and have the baby so he just wants to be invited."
He added that he feels so grateful to be a father.
"I'm just so lucky to be their dad," he shared. "I just try my best to show them what we both do with our actions. Sometimes it's really simple, you just try to teach them to treat people the way you want to be treated, and that seems like the best way to show them."