Stella McCartney and Rihanna Have ‘Mood Calls’

Singer Rihanna (L) and designer Stella McCartney attend a cocktail reception at the Stella McCartney Special Presentation during London Fashion Week Autumn/Winter 2012 a One Mayfair on February 18, 2012 in London, England. Photo: Dave M. Benett/Getty Images

According to the Daily Mail, the designer "rings" the singer and "asks her to explain what has influenced her mood that day — colours, textures, patterns." Maybe they're working on a line of tablecloths.