Sophie Turner has said she became "very self-conscious" after receiving criticism on social media over her role in Game Of Thrones.
The British actress, 23, rose to worldwide fame while starring as Sansa Stark in the HBO fantasy show from 2011 but said comments online impacted her mental health.
Speaking to US talk show host Dr Phil on his podcast, Turner said: "I would just believe it. I would say, 'Yeah, I am spotty. I am fat. I am a bad actress'.
"I would just believe it. I would get (the costume department) to tighten my corset a lot. I just got very, very self-conscious."
Turner said things got so bad she would hide away from her friends.
She said: "I had no motivation to do anything or go out. Even with my best friends, I wouldn't want to see them, I wouldn't want to go out and eat with them."
"I just would cry and cry and cry over just getting changed and putting on clothes and be like, 'I can't do this. I can't go outside. I have nothing that I want to do'," Turner added.
Turner is now one of the world's most recognisable actresses thanks in part to Game Of Thrones and will star in Marvel superhero film Dark Phoenix in June.
She is engaged to the singer Joe Jonas and is expected to walk down the aisle later this year.
Despite her mental health struggles, Turner said she never considered suicide but thought about it frequently.
She said: "It's weird. I say I wasn't very depressed when I was younger, but I used to think about suicide a lot when I was younger. I don't know why though.
"Maybe it's just a weird fascination I used to have, but yeah, I used to think about it. I don't think I ever would have gone through with it. I don't know."
