Lady Gaga and Christina Aguilera have both served as spokespersons for the MAC AIDS fund. It uses 100 percent of the profits from the sale of Viva Glam lip products to fight against the HIV/AIDS epidemic. So, who else could MAC Cosmetics find to add this exclusive list of super celebs using their lips for a good cause?

None other than Ms. Superbass, Nicki Minaj and sexy crooner, Ricky Martin of course! Both celebs have signed on as spokespersons to represent M•A•C for the 2012 Viva Glam campaign.

The 2012 campaign will launch next February, but these two hot stars are already gearing up to sizzle in Miami today with a photo shoot with the fabulous David La Chapelle.

Read Super Cute: Urban Decay Rollergirl Eyeshadow Palette

From this exclusive lip gloss collection, the M•A•C AIDS Fund has been able to raise $224 million to fight against HIV/AIDS. To find out more abour MAC Cosmetics' MAC AIDS Fund, click here.

Get chic lip gloss, fight HIV/AIDS. Now, that’s glam for a great cause.

Evette Brown is a regular contributor to Betty Confidential.