01/02/2012 at 01:00 PM EST
Despite the loud buzz
gave birth over the holiday weekend, the countdown to the arrival of baby Bey is still on.
On New Year's Eve, the singer, 30, ate for two at Buttermilk Channel in Brooklyn, where she and husband Jay-Z feasted on fried chicken and oysters.
"She was definitely a pregnant lady that night," said an onlooker. "They sat side by side and had a cozy and intimate dinner. They seemed to be having a lovely time."
And although the soon-to-be mom is due soon
, an uncomfortable baby bump is not getting in the way of her sense of style
"She looked amazing. She wore sky-high heels. It was really impressive for an enormously pregnant woman," adds the source. "She looked like she was about to give birth."
The couple greeted excited fans on their way out of the restaurant, presumably before heading to a New Year's shindig at Beyoncé's sister Solange's apartment.
And pregnant Beyoncé in heels got huge props from her sibling. Tweeted Solange: "Shout out to my sister for being THE cutest pregnant woman ever!"