Former teenager Julia Misley has filed a lawsuit against Steven Tyler.
The suit alleges sexual assault, battery, and emotional distress.
It was filed under a 2019 California law allowing adult victims to sue for decades-old instances of assault.
Misley claims Tyler "groomed, exploited, and sexually assaulted" her for three years.
The lawsuit states that Misley met Tyler in 1973 and that he became her legal guardian in 1974.
Misley alleges she became pregnant by Tyler in 1975 and that he coerced her into an abortion.
The suit also claims Tyler retraumatized Misley by publishing details of their relationship in memoirs.
Misley is seeking damages for severe emotional injury and economic losses.