Editing Brooke Kosinski

Brooke Morgan Kosinski is a dancer at the Abby Lee Dance Company. She lives in Pennsylvania with her parents and her brother, Noah. She has been dancing since the age of 2 and became best friends with Mackenzie Ziegler almost immediately after she began dancing with her. Brooke and her mother, Hollie, were offered a spot on the Abby Lee Dance Company's junior elite competition team that would be featured of Lifetime's reality television series ''Dance Moms ''every week, but Hollie turned down the offer due to privacy issues and concerns.

Brooke's first television debut was a cameo appearance on an episode of season 2 of ''Dance Moms'', and she has been seen on the show during short clips ever since. She was a background dancer along with several other members of the Abby Lee Dance Company in Mack Z's music video for "It's a Girl Party," which, upon its release date, reached the top of the pop charts in a matter of hours. Both the song and video rose up the charts above even Beyoncé.

== Dances ==

=== Solos: ===
Broadway Banana - musical theater

If I Can't Take It with Me - musical theater - choreographed by Jennine Wedge

I'm Available - musical theater - choreographed by Jennine Wedge

Beautiful Like Me - musical theater - choreographed by Jennine Wedge

n/a - tap - choreographed by Matt Saffron

=== Duets: ===
Abba Dabba Honeymoon (with Mackenzie Ziegler) - acrobatic

Together Wherever We Go (with Mackenzie Ziegler) - acrobatic

Big Finish (with Mackenzie Ziegler) - acrobatic jazz

=== Groups: ===
Pinktastic - jazz (with Mackenzie Ziegler and others)

I Kissed a Boy - jazz (with Alex Biery, Mackenzie Ziegler, and others)

That's Amoré - ballet (with Alex Biery, Mackenzie Ziegler, and others)

Germs - musical theater (with Alex Biery, Mackenzie Ziegler, and others)

What's New at the Zoo - musical theater (with Alex Biery, Mackenzie Ziegler, and others)

Bad Apples - musical theater (with Nia Frazier, Paige Hyland, Chloe Lukasiak, Kendall Vertes, Mackenzie Ziegler, Maddie Ziegler, and others)

Where Have All the Children Gone - lyrical (with Nia Frazier, Brooke Hyland, Paige Hyland, Chloe Lukasiak, Kendall Vertes, Mackenzie Ziegler, and Maddie Ziegler)

Sound of Music - ballet (with Sammie Lenzi, Anastasia Rose, Mackenzie Ziegler, and others)

Pink's Hot Dogs - tap (with Selah Curran, Kylie Edwards, Keara Sweeney, and Mackenzie Ziegler)