Kelly Rowland is 'so excited' about best friend Serena Williams' pregnancy: 'I can't wait to meet this little person'

Kelly Rowland can barely contain her excitement over Serena Williams' pregnancy!

"Oh, I'm so happy for her," Rowland exclaimed during a Facebook Live interview with AOL Entertainment. "I'm so happy for her, and I'm so happy for the incredible gentleman that she has in her life. [Fiancé Alexis Ohanian] is just incredible. He knows he's incredible, and the two of them together just -- mmm!"

Rowland, a devoted mom to two-year-old Titan, confirmed that playdates are in the future: "Oh, of course that's gonna happen!" she said. "I'm so excited and I can't wait to meet this little person."

Toddler playdates can get chaotic, but Rowland always has one key item on hand for inevitable accidents: A box of Band-Aids. She recently teamed up with the company for its "Stick With It" campaign, and she's a big advocate for its Skin-Flex line -- especially for her son.

"I've always loved the characters on Band-Aids," she said, and her son's preferences have of course changed with age: "From Snoopy a long time ago ... to 'Cars,' Mickey Mouse and 'Star Wars.' He loves those."

See photos of Kelly Rowland and Serena Williams through the years

Titan tags along with his mom to tapings of "The Voice" in Australia, where Rowland is a coach. "He's singing very loud, he's like mocking me when I sing. It's the cutest thing to watch."

That said, she'd be a little hesitant if Titan, who already takes piano lessons, wanted to pursue music as a career: "Oh God," she groaned, laughing. "I would support him above anything ... and I would make sure that he's prepared and it's something he truly has a passion for."