Beyonce & Jay-Z: Babysitting Duo

Music power couple Beyonce and Jay-Z don't have kids of their own just yet, but they're getting plenty of practice thanks to the Single Ladies singer's 5-year-old nephew Daniel.

Daniel's mom Solange Knowles gives both babysitters rave reviews, telling OK! that Jay-Z is a "very good uncle." As for her big sis Beyonce:

“She’s very hands-on. I’ve had two weekends where I’ve been able to hand him over, and it’s been very nerve-racking for me, but she does a great job. The bedtimes we got to work on. Sometimes I’ll call expecting him to be asleep, but he’s still up.”

Last month lucky Daniel joined his award-winning aunt and uncle at the Grammys, where he even made an appearance on stage as Jay-Z and Rihanna accepted a statue. When the Umbrella singer asked if he had anything to say into the mic, the tot politely replied, "No, thank you."

Says Solange, “I was a proud mom that he used his manners, because anything could have come out of that mouth.”

So might there be a baby on the way for Beyonce and Jay-Z sometime soon?

"I definitely want to have a child, but I know from my nephew it's a lot," she said earlier this year. "I hope that those things will just happen naturally."