'Dance Moms' fight leads to arrest: Kelly Hyland 'attacks' Abby Lee Miller for 'overlooking' daughters during casting call, booked on 'assault, harassment'

Warning, "Dance Moms" are on the attack!

According to TMZ, Kelly Hyland (outspoken star of the hit Lifetime reality show) recently "attacked" infamous dance instructor Abby Lee Miller during an NYC casting call.

(Lifetime)

The altercation occured back in November 2013, when Miller was searching for new talent in the city. Apparently, Hyland was enraged that her two daughters Brooke (15) and Paige (13) were being "overlooked" by their longtime coach. Miller "threatened" to replace one of the girls with another potential dance star, and Hyland allegedly lost it.

Sources reveal that after some shouting Hyland attacked, pulling Miller's hair and embarking on a full-out cat fight.

Hyland was arrested and booked on assault and harassment, but no charges have been filed yet.

The Hyland family's been with the Abby Lee Dance Company for years... Kelly was even a student back in the day. She's always had a grudge against Miller, but things never got physical (until now).

Turns out cameras were rolling when the two women began fighting, so it might make for some awesomely ridiculous "Dance Moms" footage. Stay tuned...