Rihanna has launched her autumn/winter River Island collection in London.

The popstar arrived at River Island's flagship store on Oxford Street in London to host an exclusive event to launch her latest line for the high street favourite.

The store was transformed into 'Club Riri', where guests were able to rub shoulders with the woman herself and party the night away.

Five competition winners also got the chance to be styled by the Bajan superstar using pieces from her a/w collection. Watch a video of their reactions below.

Kadesha Spring from London said: "It was crazy, just the best experience. Rihanna knows her stuff – she knew exactly what she was doing. I love the new collection and especially the clothes I've got on".

Rihanna commented on her latest range: "This collection is definitely really special to me. I think I got a lot of freedom and I got to put a lot more of myself into it. I had so much fun designing it for Summer/Spring that Autumn was just – it was just balls out.

"We had fun and just went for it and did things we didn't get to do before, and that's why I'm excited. That's what's special about it – it's different, it's fresh."

The autumn collection, which is available from today in stores and online, has an emphasis on urban sports lux, with key pieces including camouflage leggings, cropped sweatshirts, bodycon mini dresses, boyfriend jeans and 'G4Life' slogan bralets.

Take a look at the range here.