As Rosie Huntington-Whiteley’s new role in the next Mad Max film is announced, her little sister – Florence – has followed past ELLE cover star Rosie into the world of modelling.

Florence joins 19 other pretty young things from Blighty, America and Hong Kong who have been recruited by ‘University Outfitters’ Jack Wills as ‘Seasonaires’. These connected ambassadors are charged with Tweeting about and hosting Jack Wills knees-ups from Salcombe to Aldeburgh, and Nantucket to Newport.

She has also been Tweeting about her favourite Jack Wills buys, such as a pair of cut-off bleached denim shorts, about which she said: ‘cannot wait to get my legs out in these!! might need to wear some knee pads when long boarding with @barrow_ed [a fellow Seasonaire]’ – see the Tweet here, and check out RHW's Twitter feed too.

In the campaign image, Florence – a first-year Leeds University student - wears a tiny pair of red shorts and a Jack Wills-branded T-shirt, with green nails and friendship bracelets.Those tell-tale genetic blessings of a perfect pout and a thick and glossy mane are there, meaning that while this may be her first foray into fashion, it wont be her last.

Follow Florence at @floranceahw, and follow us on @ElleUK.

Watch Rosie's Behind the Cover video