The Bajan beauty posted both photos on her Instagram page and gushed about her time shooting for the fashion bible.
"We shot this entire shoot in Brazil with my lover boy @teamvivanco…Brazil I miss you already," she explained.
In one of the covers, RiRi is shown wearing a sexy, plunging dress that shows off her chest and is open all the way up to her hips.
The singer paired the look with multiple gold arm bands and rocked a cropped 'do for the photo shoot.
In the other pic, Rihanna stares seductively in the camera and appears to be completely topless in the shot.