9/4/12 at 3:55 PM

Stella McCartney and Rihanna Have ‘Mood Calls’

By Hilary Moss

LONDON, ENGLAND - FEBRUARY 18: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) 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 by 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.

Rihanna provides inspiration for new friend Stella McCartney's latest collection [Daily Mail UK]