Tina Knowles Dances the Night Away Amid Speculation That Daughter Beyonce Has Given Birth to Twins

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Tina Knowles is patiently awaiting the arrival of her grandbabies, but that's not stopping her from having a little fun!

Knowles' daughter, Beyoncé, is expecting twins with husband Jay Z any day now, and to seemingly pass the time, the 63-year-old fashionista took to Instagram on Saturday to share highlights from her fun night out.

WATCH: Tina Knowles Says Daughter Beyonce Is 'Double Glowing' During Second Pregnancy

Knowles posted a video of herself slow dancing to "For the Love of You" by The Isley Brothers with her husband, Richard Lawson, at a party for her friend A.C. Collins.

"When your favorite song of all times comes on," she captioned it. "Drifting on a memory, there's no place I'd rather be than with you! Yeah than loving You.'"

"At our friend A. C. Collins birthday party last night (70's theme!)," she continued. "Very Cool fun party❤Happy Birthday A.C."

According to another Instagram post, Knowles is celebrating another occasion, "a wedding weekend in New York," amid rumors that Beyoncé is in labor and has maybe even given birth. Rumors began swirling on Thursday when Jay Z was reportedly spotted at a Los Angeles hospital with their 5-year-old daughter, Blue Ivy.

WATCH: Did Barack Obama Accidentally Reveal the Sex of Beyonce & Jay Z's Twins?

But the Beyhive really started buzzing when Jay Z skipped the 48th Annual Songwriters Hall Of Fame Induction and Awards Gala in New York City that same day. The rapper was honored as the first hip-hop artist to ever be inducted. Instead of delivering a speech in person, he took to Twitter (a rare activity for Jay!) to name off all the people who've inspired him over the years, and who continue to do today.

Meanwhile, Beyoncé has been MIA. Ever since announcing her pregnancy, she hasn't been shy about documenting her journey via social media. Normally she's very active on Instagram, but we noticed her last picture was posted on May 29 -- a snap of Blue Ivy sitting atop her baby bump.

When ET last caught up with Knowles at the Michael Jackson: Searching for Neverland premiere last month, she told us her daughter was "doing great."

WATCH: Tina Knowles Says Beyonce Is 'Ready to See Her Babies,' Spills Details on Her Baby Shower!

"She's just ready to -- you know, she's ready to see her babies," she exclaimed.

Hear more in the video below!