Rihanna describes collection as 'casual and flirty' London - Arabstoday London Fashion Week autumn/winter 2013 kicked off this morning at Somerset House with British designer Zoe Jordan opening the event. With more than 50 catwalk shows during the five-day extravaganza, including collections from Vivienne Westwood, Christopher Kane and Alice Temperley, pop star Rihanna has joined the fashion list and is preparing to showcase her first collection of clothing and accessories for high street chain River Island. Ahead of the launch of her line, Rihanna tweeted: "My first fashion show!!! My designs will walk the catwalks of London Fashion Week in days!! It's gonna be MAJAH! #RihannaForRiverIsland." The star has described her collection as "casual, chique and flirty." The range will hit stores on March 5. Zoe Jordan kicked off London Fashion Week autumn/winter 2013 this morning - see some of the collection below: