Caitlyn Jenner took to social media Friday to announce her new partnership with make-up giant MAC cosmetics, according to E! News.

The "I Am Cait" star and former Olympian will launch a special-edition lipstick called "Finally Free" for the cosmetics company, and all of the proceeds from the product will go towards the MAC AIDS Fund Transgender Initiative, which supports transgender communities.

"I'm finally free to announce my partnership with @MACcosmetics!" Caitlyn captioned an Instagram picture of herself looking glamorous in a shimmering gold gown. "All sales of our lipstick shade, 'Finally Free,' go toward improving transgender communities. Look for it in April! #MACCaitlynJenner."

The 66-year-old transgender reality star said in an interview with MAC that she chose "Finally Free" as the name for the rosy-nude-color lipstick because "I wanted a name that I use, and which represents the community. This is who I am: Finally Free."

"Her beautiful transformation inspires all of us to live our best lives and to honour who we are," the company said. "Differences are what make us interesting. Acceptance, warmth and understanding are what make us human." MAC's previous brand ambassadors have included the likes of Lady Gaga, Rihanna and Nicki Minaj.

"Before I came out, the impression I had of MAC was, 'That's quality; that's the good stuff.' Not only is it the good stuff, but MAC also has the willingness corporately to use its reach to make a difference, to change people's minds. To help raise funds for HIV and AIDS, and in our case, for trans issues," Jenner said when asked about why she chose to partner up with MAC.

Jenner's "Finally Free" MAC lipstick goes on sale on April 7 for $17.