People.com Celebrity Rihanna Models Her Milk Mustache By People Staff Published on January 31, 2008 06:40 PM Share Tweet Pin Email She’s known for her sleek bob, her fashion-forward looks – and her milk mustache? Singing sensation Rihanna is the latest celebrity to adopt the iconic look, posing for the new “Body By Milk” campaign which is designed to encourage teenagers to embrace healthy eating and, of course, drink milk. The “Umbrella” singer and Grammy nominee is in good company too. Hayden Panettiere, Beyonce Knowles and the cast of High School Musical 2 are among the famous faces who’ve adopted the ‘stache for the campaign.