{blackbabes} Beyoncé & Jay-Z Expecting a Baby

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Beyoncé & Jay-Z Expecting a Baby | Beyonce Knowles

Leave it to Beyoncé to steal the spotlight at Sunday's Video Music Awards.

But it wasn't one of the pop diva's signature show-stopping performances that had people talking. Instead, it was Beyoncé's burgeoning belly bump, swathed in an orange gown.

Beyoncé, 29, posed for photos with her hands cradling her belly, teasing, "I have a surprise!"

"I'm happy to say it's true," her rep confirms to PEOPLE.

"They told friends in the last month," a source tells PEOPLE. "She's never been happier. Seriously it's all she's been waiting for. And Jay is like an excited kid. They're adorable."

This will be the first child for Beyoncé and her husband of three years, 41-year-old Jay-Z, who performed "Otis" at the VMAs with Kanye West.

Just in June, Knowles, who turns 30 on Sept. 4, and told Piers Morgan, "I always said I would have a baby at 30."

Looks like the talented singer is true to her word!