Beyonce is joining forces with British retailer Topshop in a joint venture which will feature clothes she has designed for exercising.

The 33-year-old singer announced she is merging with Topshop to launch the company Parkwood TopShop Athletic Ltd in a 50/50 joint venture.

The clothing line will be available next autumn.

Beyonce said in a statement that she "could not think of a better partner" as she continues to grow her production company, Parkwood Entertainment.

She said she has "always loved" Topshop and called the retailer "forward thinking".

Beyonce first dabbled in fashion when she released the House of Dereon line alongside her mother a decade ago.