A fashion advert for Selfridges was cleared by the advertising watchdog following a complaint the model in it looked "unhealthily thin".
Denise Hatton, Chief Executive of the National Council of YMCAs, a founding partner of the Be Real Campaign, said:
“We’ve seen positive advances in the fashion industry over the last few years, including from Selfridges themselves, which shows that there is a shift towards more responsible advertising and portraying of diversity.
“However, the recent advert is another example where a slim body is still favoured over others, despite the fact that it doesn’t reflect the majority of customers.
“Idealising a body type that’s unobtainable for most people can lead to unhealthy methods of weight loss.
“This is why we’ve launched the Be Real Body Image Pledge last year. Through the pledge we want retailers, as well as modelling agencies and other industries to promote body types that reflect the population as it is, with all its shapes, sizes, ages, ethnicities, abilities and more.”