Mariah Carey has joined the photo-sharing site Instagram, and she's already putting it to good use, unveiling both the artwork and the release date for her new single, "Triumphant (Get 'Em)."

The single, which features rappers Meek Mill and Rick Ross, will premiere this Thursday, August 2.  The artwork shows Mariah looking sexy and slinky, poured into a nude-colored strapless tight dress with cutouts on the side.

The singer previously tweeted a photo from the set of the upcoming video for "Triumphant."   It shows her lying on a couch with her legs in the air, wearing some sort of pink satin dress.

As previously reported, Mariah says that she wrote "Triumphant" when she "was going through a difficult time, and it helped me get through it."