She has spent the last few days chilling poolside but it was back to work with a bang for Rihanna as she got all made up to perform in Atlanta. Diamonds singer Rihanna shared a tópless snap of her getting made up, only covering her módesty with a white towel. With her hair primly curled the star looked amazing and showed off her rather demure yellow únderwear. The 25-year-old wrote on her Twitter account: 'Show time!! #DWT," she wrote. "#ATL is all miiiiiinnneee!!!! I want you on your WORST behavior!!! Tonight is all about you!!! #DiamondsWorldTour'