Credit: Kevin Mazur/

The world will have to wait a little bit longer for a mini-Sasha Fierce -- because Beyonce Knowles is not pregnant.

On Thursday, hip-hop site Media Take Out reported that Beyonce, 28, and husband Jay-Z are expecting their first child together. Citing a "rock solid source," the site claimed that the star is "fine and resting now" and planned to work through her pregnancy.

A publicist for the singer's record company Sony tells Rolling Stone that the report is "untrue."

Beyonce and rapper/producer Jay-Z (real name: Shawn Carter), 40, quietly wed in April 2008. The  private couple rarely share details about their marriage, but at this year's Grammys on Jan. 31, Beyonce got emotional while accepting her Best Female Vocal Performance trophy.

"I'd love to thank my family for all of their support, including my husband. I love you."

Forbes recently magazine ranked the pair as Hollywood's #1 top-earning couple in its most recent annual list. The husband and wife made a combined $122 million between June 2008 and June 2009.