Rihanna has announced a collaboration with the Hard Rock Café, making an appearance at the Paris branch to launch a charity t-shirt in aid of the Clara Lionel Foundation, a humanitarian organisation set up by the Diamonds singer in honour of her grandparents, which aims to help and support children.

The shirts are available on hardrock.com and feature artwork combining the singer's face with the American flag. Rihanna has also donated three of her concert outfits to the charity.