Tess Holliday has accused Revolve of fat-shaming.

Tess Holliday

Tess Holliday

The 33-year-old plus-sized model has hit back at an online retailer for selling a sweatshirt which reads "being fat is not beautiful it's an excuse".

The body-positivity advocate shared a screenshot of the jumper, which the retailer has now removed.

She wrote: "LOLLLLL @REVOLVE y'all are a mess."

Revolve has already addressed the issue and apologised for its mistake.

In a statement to PEOPLE, the company said: "This morning, images of a forthcoming LPA collection were prematurely released on Revolve.com. The capsule collection - originally conceived by LPA alongside Lena Dunham, Emily Ratajkowski, Cara Delevingne, Suki Waterhouse and Paloma Elsesser - was set to debut tomorrow as a direct commentary on the modern day 'normality' of cyber-bullying and the shared desire to create a community for those most affected by the epidemic.

"Proceeds were set to benefit 'Girls Write Now', a charity focused on mentoring underserved young women and helping them find their voices and tell their stories through writing.

"The prematurely released images featured on Revolve.com was not only included without context of the overall campaign but regrettably featured one of the pieces on a model whose size was not reflective of the piece's commentary on body positivity.

"We at Revolve sincerely apologise to all those involved - particularly Lena, Emily, Cara, Suki and Paloma - our loyal customers, and the community as a whole for this error."

The collection has now been pulled, and the retailer has announced it will be donating $20,000 to 'Girls Write Now'.