In just hours, more than a million fans had watched the stunning video and plenty shared their compliments in the comments section.
"Yaaassssss!! That beautiful belly!" one fan exclaimed.
"You look so gorgeous at every angle. Congratulations darling!" Orange Is The New Black actress Laverne Cox penned.
Meanwhile, others debated whether Kelly was having a boy or girl - and many were certain that her unborn bub will be her second son.
"I think this little one is going to be another boy..." mused one.
"You are having a boy! Belly button sticking out," remarked another.
"I'm going on record to say it's another boy for you," a third confidently remarked.
Kelly and husband Tim Weatherspoon are already proud parents to their son, Titan, who turns six in November.
The Voice coach revealed to Women's Health US that she and Tim had been talking about expanding their brood when COVID hit and they decided to see what happens.
Kelly, whose baby is due in the new year, admitted that despite being initially uncertain about the interview, she still wanted want to remind people that life is important.
“And being able to have a child…I’m knocking at 40’s door in February. Taking care of myself means a lot to me.”
Shortly after news of Kelly's pregnancy broke, her fellow Voice coach Delta Goodrem shared her joy on her own Instagram Stories by reposting a screenshot of Kelly's Women's Health cover with the caption: "Couldn't be more beautiful!!! @kellyrowland love my gal! xx"
Kelly previously spoke of her and Delta's close bond in a chat with Who back in May.
“From the moment I met her, I feel like we experienced a real friendship,” the Destiny's Child star said of her fellow Voice coach.
“She has been absolutely incredibly supportive. I can tell her something that’s happening and she will completely keep it to herself. I could really trust her … She’s a true friend.”
