Credit: Lester Cohen/

Beyonce and Jay-Z, who quietly wed in 2008, rarely acknowledge in public that they're married.

But at Sunday's Grammys in Los Angeles, Beyonce, 28, couldn't contain herself.

As she accepted the Best Female Vocal Performance award, she told the audience she was "nervous." She then added, "I'd love to thank my family for all of their support, including my husband. I love you."

Jay-Z, 40, looked stunned by the shout-out.

At Sunday's show, Beyonce earned a record for most wins by a female performer after taking home six trophies, including song of the year for "Single Ladies."