Pop star Rihanna knows that beauty pays -- BIG! The 'Pour It Up' singer has inked a lucrative deal with MAC cosmetics that will feature a multi-collection makeup line. The collection is being called, 'RiRi [Hearts] MAC' and will center around a shade of red lipstick called, 'RiRi Woo'.

Rihanna more recently has displayed her own clothing line (Rihanna For River Island), also her own fragrqances, Reb'l Fleur, Rebelle, and Nude, available at PerfumesByRihanna.com.

The first collection is set to be debuted on May 3rd, with the second rolling out this Summer, the third collection in the Fall, and the fourth collection will be a featured Holiday collection -- to debut in stores mid-December.

MAC is looking to keep Rihanna and her brand on for the long-term and talking about possibly creating a partnership deal.

Hey, it looks like it pays to be Rihanna! Congratulations.