If you thought Rihanna's MAC Viva Glam collection in February was her last hoorah, think again. Always doing things her own way, the singer and fashion icon announced on Aug. 4 via Twitter that she'd be launching a Viva Glam II collection consisting of a metallic-flecked, cooler-toned nude lipstick for $16 and matching Lipglass for $15.

Check out my new @MACcosmetics #VivaGlam ad. All sales go to people affected by HIV/AIDS. Comin @ ya this September!! pic.twitter.com/nzHOuhiuD4

Rihanna rocks a Nickelodeon-slime-colored wig and matching separate skirt set in the short-notice ad — her Viva Glam II is set to hit shelves next month.

Viva Glam collections are MAC's line of cosmetics designed to support the MAC AIDS Fund, established in 1994. Every Viva Glam purchase is donated entirely to the fund. One lipstick sale, according to the fund's website, covers a week's worth of groceries, one HIV-prevention workshop, or a pair of school shoes for a child orphaned by AIDS.

But Rihanna's September successes don't stop there. She announced on Twitter she's waited years for the moment her Rogue Man cologne would be released, and finally the fragrance is set to hit shelves in the fall. On Twitter, Rihanna wrote, "This September wake up next to your man smelling like this!!!" Not quite sure what "this" is, but if it's Rihanna-approved, it's probably delicious.

Rogue by Rihanna, the women's perfume with notes of lemon blossom, jasmine and sandalwood, was released in September 2013.