Fun fact: every Black '90s sitcom star also moonlit as a '90s R&B act.

Seriously.

Martin's Tisha Campbell and Tichina Arnold. The Fresh Prince of Bel-Air's Tatyana Ali. And even Sister Sister's titular sisters, Tia and Tamera Mowry.

On her Renaissance World Tour, Beyoncé shone a light on Voices, the Mowry twins' girl group, when she noticed Tia Mowry in the audience at her B'Day concert on Sept. 4, and gave a vocal nod to their 1992 hit, "Yeah, Yeah, Yeah."

Tia Mowry and Beyonce

Tia Mowry and Beyoncé

| Credit: Arnold Turner/Getty Images; Kevin Mazur/WireImage

The eagle-eyed (and -eared) Hive was quick to notice the cute tribute during Bey's performance of "1+1", when she spots Mowry, blows her a kiss, mouths "I love you," then seamlessly segués into a bit of "Yeah, Yeah, Yeah."

Mowry described the moment on Instagram.

"The first time I met @beyonce was during her Destiny's Child days when she was on a production with my brother @tahj_mowry, and since then I have been lucky to cross paths with her throughout the years," Mowry captioned a series of pics from the evening.

"I felt so lucky to have been able to see her perform Renaissance on her birthday!" Mowry continued. "The highlight of the night was when she saw me in the crowd, and she gave me a smile and a hello, and then started singing 'Yeah, Yeah, Yeah' from when @tameramowrytwo and I were in the singing group, Voices! I was so touched by her gesture, and I still can't believe that it truly happened!"

Well, it's perhaps not too shocking that Beyoncé would know and could easily interpolate, on the fly, a song that peaked at No. 72 on the Billboard charts 30 years ago. What is shocking is that Beyoncé can see anyone or anything from the stage, especially with all that blinding silver lamé.

But then again, she is Beyoncé (thank you).