Beyoncé doesn't seem to have a baby on board.
On Friday, blogs were buzzing that the singer was pregnant. Sources told E! News it wasn't true, and this weekend she seems to have proven it.
After hubby Jay-Z's Vegas concert at the Pearl Theater in the Palms Hotel Saturday, Beyoncé knocked back glasses of champagne with Jay and his entourage at Tao.
They toasted with Hova's own label, Ace of Spades bubbly, during a private celebration dinner before popping more bottles in the club...
"She let her husband shine, clearly having a blast herself, but staying a bit more low-key as she sat on the banquette at the table," a source tells us, adding that the singer was "definitely drinking."
The group stayed at Tao until 4 a.m.
And it was a busy weekend for the famous couple. On Friday night, Jay-Z performed in L.A. for a crowd that included Ashlee Simpson-Wentz, Pete Wentz, Justin Bieber and Paris Hilton.
See more stars in Sin City in our Party Pics: Vegas gallery!