London, Nov 27: After sharing a half-naked picture of Chris Brown on her bed, singer Rihanna has put up a topless picture of herself on her Twitter page.Rihanna shed her top and left her black hot pants on, posing for the camera with her bare back exposed from the waist up, for the picture. Her face was turned provocatively over her shoulder.Behind her stood a clothes rack with a few items on their hangers and some boxes and next to her was a bed with white quilt and pillows.Rihanna posted the black and white photo on her Twitter page along with the message, "LondonNightLife," reports dailymail.co.uk.Brown and Rihanna are said to have reconciled after splitting from each other in 2009. But Rihanna, 24, is yet to confirm her relationship with Brown.