Lily Collins has spoken out about catwalk sizing, and the ongoing need for the fashion industry to discuss its impact on models' mental and physical health.

'I think the BMI conversation was really important,' Collins told The Hollywood Reporter, referring to France's new regulations requiring catwalk models to have a body mass index of at least 18, and a doctor's note certifying that they are in good health.

'But then you do watch fashion shows and you do see extremely small girls walking down the catwalk, and a lot of them are really young and haven't become women yet,' Collins went on. 'It's like their body shape hasn't changed. Some girls look like they're about to pass out. I think there's still a conversation to be had there about catwalk sizes.'

Collins stars in Netflix's new original movie To The Bone, a drama about a young woman with anorexia, and has opened up about her own past struggles with the disorder.

'It's important, and something a lot of young women go through,' she said. 'There's no shame in it and it's about embracing your past, and that it doesn't define you.'

From: Harper's BAZAAR US