Rihanna put her fit frame on display yesterday when she explored Monte Carlo with a group of pals ahead of her concert in Monaco. She strutted her stuff in a black one-piece swimsuit and popped into a Conte Mori shop with a friend. Rihanna also changed into a black bikini and loose-fitting tank top to take a parasailing adventure. Her swimsuit trip yesterday looked like it was much more successful than her bikini jaunt in Poland over the weekend, when she attempted to squeeze in beach time with her friends ahead of a show. She deemed her Polish beach day "a fail" on Instagram and posted a photo of herself wearing a blue and white two-piece while pouting inside a hotel room.