Dressed down in denim cutoffs and a white lace shirt, the singer sipped a drink as she chatted with her husband and other partygoers at the exclusive bash held in a warehouse in Brooklyn.
As writer/stylist David Yi shows in the pictures posted on his Instagram account, Bey had a great time, and at one point got her dance on as she threw her head around and busted a move alongside Timbaland in the middle of the crowded room (see the video here).
"Queen Beyonce is in love with her king #jayz dancing and being and silly and cute!" David wrote. "I love them!"
Beyonce is featured on Jay-Z's new album on the song "Part II (On the Run)."
You can listen to it below.