Beyoncé hosts a star-studded party in New York City on Sept. 5, 2016. The bash ended at 5 a.m. the next morning.
"We did it !!" the music producer wrote on Instagram. "@beyonce Happy Birthday No say say."
The Destiny's Child singer channeled Donna Summer as she posed with her pal.
After attending Kanye West's concert at Madison Square Garden, the couple headed to Midtown to get down with 'Yonce.
The singer and rapper wore wigs to get in the '70s spirit.
The Destiny's Child singer and her stylist dressed as Sonny and Cher. "Had to come ALL the way through for [Bey]'s Soul Train themed party!!" Williams wrote on Instagram.
"Guess who was the chef in the kitchen tonight!" Ambrose wrote on Instagram. "Ask @iamdiddy & @iamdiddy for the ingredients! #WillieEarl."
"Happy bday TT!" the rapper wrote on Twitter. "You are so good to me! @Beyonce."
"we got soullllll," the musical duo wrote on Instagram.
"HBD my virgo sis Beyoncé," the music producer wrote on Instaram. "date night at the soul train party with my Love."
"My GIRLZ," Hunter wrote on Instagram.
"@lala & @cassie bought disco to the dance floor tonight! #soultrain series," stylist June Ambrose wrote on Instagram.
"We partied hard," the music producer wrote on Instagram.