Nina took to her Instagram to explain to fans what went down and how she and her friends got to that point.
"I’m a unicorn. And I’ve got some wild friends. So what did they do to surprise me during a girls dance class on my birthday? Onesie dance party. DUH ! Feeling pretty lucky and grateful right now. Thank you for always keeping in my toes and being the best friends a girl could ask for. I felt so special and loved last night. Appreciate you strong fearless fierce amazing women in my life!" she wrote.
Now watch it below and stan her even more than you already do.