Rihanna Partners with MAC Cosmetics New Makeup Line, RiRi Celebrates 25th Birthday in Style [PHOTO]

Rihanna is celebrating her 25th birthday in style. Riri has just signed a deal with MAC Cosmetics. The deal includes four collections, named Riri Hearts MAC, which will roll out over the next year.

Rihanna told WWD that the deal was a "no brainer". The first product to launch will be Riri Woo, a red lipstick. The release will coincide with Rihanna's concerts at Brooklyn's Barclays Center on May 4 and 5. Riri Woo will be sold at Rihanna's concerts, as well as online.

Rihanna told WWD, "Whatever color you want, it's like 'Let's go to MAC.' I've been using MAC on tour for such a long time it was a natural fit for me. I have always loved makeup, and I always said that if I do it, I want to do it with a credible brand."

Rihanna reportedly was very involved in the creative process for Riri Woo, which will be her own interpretation on MAC's best selling Ruby Woo red lipstick. Rihanna explained, "There's so much to choose from, and you can mix different textures with different colors and different greens in different eye shadows. I learned so much about the detail of make-up and what makes things look different. What makes it apply different is really important. Every little detail is important."

Rihanna's deal with MAC is the first of its kind. This is the first deal MAC has done with a major celebrity that involves more than a one and done project. Following Riri Woo, a summer line will be made available online, which will pave the way for fall and holiday collections.

According to industry sources, Riri's line with MAC could do $15 million globally at retail. The deal with MAC comes fresh off the heels of Rihanna's new fashion collection with British retailer River Island. Rihanna is also unveiling a 120-piece River Island fashion collection for spring. Riri has a very busy spring and summer ahead.

Will you be buying Riri's new MAC cosmetic's lines?