Brooke Kosinski
Dancer
Dancer at the their Abby Lee Dance Company who is best friends with Mackenzie Ziegler.
She began dancing at Abby Lee Dance Company from a very young age.
She is friends with several cast members of Dance Moms, including Nia Frazier and Payton Ackerman.
She is from Pittsburgh, Pennsylvania and her mom's name is Hollie.
Her best friend's sister is Madison Ziegler.