See new photos of Rihanna wearing a snakeskin bikini and showing off her butt on Instagram Aug. 7. Credit: Courtesy of Rihanna

This is how Rihanna spends her Wednesdays. The "Diamonds" singer posted photos of herself relaxing poolside while wearing a skimpy bikini in Barbados on Wednesday, Aug. 7. Rihanna, 25, proudly flaunted her slim and toned bod in sexy swimwear.

"#Wednesdayz," she captioned one full-body shot. In the photo, Rihanna modeled a black string bikini top and snakeskin print bottoms. She shared another super closeup shot of her butt with the caption, "Snakes X Skin #snakeskin." The singer accessorized the look with gold snake-themed jewelry.

But the accessory Rihanna was most proud of was her new gold grill in the shape of a machine gun. As a long hashtag she wrote, "I like the gun when I'm done cuz I know that revenge is sweet." 

During her trip to her native Barbados, Rihanna has been partying it up. On Aug. 3, she was photographed attending the Foreday Morning Jam event wearing a white monokini and twerking in the street.