She posted pics for the ad campaign and the M·A·C Holiday collection captioned:
MAC GIRLZ!!!!! My @maccosmetics#HOLIDAYCollection is available globally in stores and online December 2013! #RiRiHeartsMACRihanna has had several collections with M·A·C, RiRi Woo, her Limited Edition RiRi Woo, and RiRi Hearts. This holiday collection will be a second edition of her RiRi Hearts collection.
MAC Girlz, you already know you HAVE to be early to get this before its sold out!!! #HolidayCollection #RiRiHeartsMAC #ComingSoon #DECEMBER #2013