Rihanna has been showing her charitable side, by posing in one of Stella McCartney’s Comic Relief t-shirts. That’s not all that Rhi-Rhi had on display though – because when she agreed to pose for the photos, she clearly didn’t have many other clothes to hand.

We can only assume that Rihanna had just done a whites wash or something because you can see her nipple ring pretty clearly directly under the t-shirt and even taking potential skimpiness into account, she doesn’t appear to wearing much in the way of ‘knickers.’

The t-shirt, if we can focus on that, for one moment, features an iconic black and white image of Marilyn Monroe, with added feature of a red nose (the long-standing symbol of Red Nose Day, held in aid of Comic Relief), attached to a pair of thick-rimmed black over-sized spectacles. Stella MCartney, who designed last year’s Team GB Olympics outfits and is the daughter of former Beatle Sir Paul McCartney, tweeted a snap of Rihanna wearing the t-shirt, along with the message “Thank you ‪@Rihanna‬ for supporting ‪@rednoseday‬! You're the best x Stella."

It’s worth noting that the average punter can buy the t-shirt from UK high street store TK Maxx and will probably look better popping a pair of jeans on, too. And, preferably, some underwear.

Rihanna, looking pleased with herself, because she remembered the whole outfit this time.

Other stars to pull on the charity tee include Olly Murs, One Direction and Caroline Flack. Red Nose Day is coming up on Friday March 15, 2013.