It's a birthday-filled time of year for our favorite Glee stars. So who is Naya Rivera (Santana) wishing a happy birthday to by calling this person the "prettiest girl I know"?

February is a big birthday month for the Glee family. Heather Morris (Brittany) turned 27 on February 1 and celebrated with her newborn son, while Darren Criss (Blaine) also hit the big 2-7 four days later, on February 5.

Credit: Instagram

And Naya is in a celebratory mood as well, as her mom tacked on another year on February 4. Naya posts a very sweet photo of her mom enjoying a glass of champagne on her special day.

"Happy birthday to my best friend and the prettiest girl I know," Naya adorably captions the shot. "Happy birthday, mom!!!"

Doesn't Naya's mom look stunning? To be honest, she looks way too young to be Naya's mom. And we love seeing her smile in that gorgeous gown!

Speaking of Naya and Heather, the two have been spending an awful lot of time together on the Glee set. We've been told to prepare for a Brittana shocker in the 100th episode special, and so we continue to cross our fingers for a long-overdue smooch!

Are you as surprised as we are by how young Naya's mom looks?

Source: Naya on Instagram