Rihanna poured it up in London as she launched her Fall 2013 River Island collection in London Tuesday (Sept. 10). The Bajan fashionista opted for the boyish look, complete with a mullet hairstyle, a sheer black top, varsity jacket and blue lipstick.

According to River Island's official website, the event took place at the company's Park House store, which was converted into "Club RiRi." Over 200 guests were in the house including fashion bloggers, contest winners and press.

The new collection boasts "G4Life" beanies, bras and panties. In addition, there are varsity jackets, camouflage leggings and dresses, as well as sweaters and jewelry.

RiRi turned it up as she sipped champagne and danced alongside her gal pal Cara Delevingne. There are also reports of a particular herbal odor coming from Rihanna's area but you didn't hear that from us.

The autumn collection for River Island will be available online and selected boutiques on Sept. 12.

We want to congratulate Rihanna on her newly launched River Island collection for the fall.

Check out some of the photos below.

River Island
River Island
River Island