Cosmetics brand MAC has joined forces with Barbadian singer Rihanna on multiple collections of colour cosmetics, with the first product - a lipstick named RiRi Woo - launching to coincide with her Diamonds Tour concerts, May 4 and 5, in Brooklyn.

Further lines roll out later in the year, with all products branded with Rihanna's name and signature, marking the first deal of its kind for the company, which has teamed up with celebrities including Lady Gaga, Beth Ditto and Nicki Minaj in the past but only for one-off projects.