Andrea Constand's Mom Challenges Bill Cosby During Trial For Alleged Sexual Assault

Andrea Constand's mom — Gianna Constand — gave a testimony Wednesday about a previous confrontation she had with embattled comedian Bill Cosby over the phone. He allegedly drugged and sexually assaulted her daughter in 2004.

Read: Andrea Constand Recalls Bill Cosby ‘Groping My Breasts Under My Shirt’ On Day 2 Of Sexual Assault Trial