The annual index by advocacy group Fashion Revolution - now in its fifth year - ranked 250 of the world's biggest brands according to how much information they disclose about their social and environmental policies, practices and outcomes.

The four women came together to model the new Spring/Summer 2020 collection for the Italian brand.

The iconic model, 23, went braless underneath a sheer organza shirt while the daughter of Cindy Crawford also flashed a generous peek of cleavage