Lily Collins sparked concern after she arrived to Calvin Klein’s NYFW show with her taut abs on full display.

The Emily In Paris star, 36, was the epitome of style as she arrived to the fashion show in a sequined feathered two piece outfit with strappy metallic heels and dainty handbag.

But it was Collins’ slim physique – particularly her abs – that caused the most conversation, with fans expressing concern over her slender size.

‘Lily….EAT SOMETHING!!!!’ one concerned netizen rote.

‘Please Lily, I mean this sincerely, get help,’ another posted.

‘Was she always this thin? I don’t normally see her in crop tops so I didn’t realize. She’s beautiful but I hope she is okay,’ one wrote.

Lily Collins sparked concern after she arrived to Calvin Klein’s NYFW show with her taut abs on full display

Fans suggested Collins ‘eat something’ after photos and video of her at the NYFW event emerged

‘Wow! Too skinny!’ one wrote with a shocked face emojji.

‘Somebody give her a cheeseburger!’ another posted.

‘Why… why…. I hope she is well!!’ another wrote.

‘Can someone give her a sandwich? I feel like she’s not breaking into two pieces no hate just sending some love,’ one wrote.

Collins previously suffered from eating disorders as a teenager and opened up about the struggle in her 2017 memoir, Unfiltered: No Shame, No Regrets, Just Me.

The actress revealed she was left terrified that she ‘had ruined her chances of having kids’ after her eating disorder had took hold, according to an excerpt obtained by The Times. 

‘My hair and nails became brittle. My throat burnt and my oesophagus ached. My period stopped for a couple of years. I was terrified I had ruined by chances of having kids,’ she wrote.

‘I was convinced that I had f***ed myself up beyond repair.’

In her honest book, she also traced the beginnings of her anorexia back to her father’s divorce from her stepmother, Collins’ third wife Orianne Cevey, and the ‘terrible disconnect’ that grew between them as she got older.

One Instagram user begged Collins to ‘eat something’

Concerned fans addressed the slim display on a Facebook video of her NYFW appearance

Collins attended the show in a sequined feathered two piece outfit with strappy metallic heels

Lily previously opened up about an eating disorder she suffered in her 2017 memoir, Unfiltered: No Shame, No Regrets, Just Me

She had only just written the first chapter of Unfiltered a week before being asked to star as an anorexic patient in To The Bone back in 2015 and understandably her mother, Jill Tavelman, did not want her to take the role.

Yet, while promoting the movie at Sundance in 2017, she opened up to IMDb Studio about the dark comedy, which is based on the film’s director Marti Noxon’s own eating disorder when she was young.

She shared: ‘This was definitely a more dramatic role for me, I suffered with eating disorders when I was a teenager as well.

One netizen declared she was ‘too skinny’

One fan begged Collins to ‘eat something’

‘I wrote a book last year and I wrote my chapter on my experiences a week before I got Marti’s script and it was like the universe putting these things in my sphere to help me face, kind of dead on, a fear that I used to have.’

Lily lost weight more than 20lbs to play the film’s main character Ellen, but this time with the help of a nutritionist.

She explained of the process: ‘It caused me to have to emotionally go there, but in a way that was the most safe, healthy way possible with a nutritionist, and really to physically go there but also emotionally.

‘And it did require a different set of emotional skills, to kind of go back in time for me, with you know, my experiences.’