Dancers take on pirouette challenge in honor of World Ballet Day

It's World Ballet Day -- the first ever day-long celebration of classical dance. In honor of the day, the world's most famous ballet companies are pulling back the curtains to give the public an inside look at the everyday lives of their professional dancers.

But today isn't just about the professionals. Last week, the ballet world extended a challenge to dancers and non-dancers alike -- give dance a twirl, literally, and post videos of their pirouettes online.

(nineeel_/Instagram)

From amateur...

(Marna Albarran-Melzer/YouTube)

To professional.

(Matt Stewart/YouTube)

Adorable tiny tots...

(MOGA CONSERVATORY OF DANCE/YouTube)

To talented young adults.

(Emi Oga/YouTube)

These people's pirouettes have left our heads spinning.

Bravo!