Rihanna was apparently left with a cut on her knee as she celebrated her London Fashion Week debut.
The chart-topping superstar reportedly injured herself when she fell against a shutter as she tried to dodge a soft drink bottle thrown by a passer-by, as she left her after-party in Soho, reported TMZ.com.
She partied with model friends Cara Delevingne and Melissa Forde at The Box after showing off her first fashion collection for River Island in a catwalk show at The Old Sorting Office on February 16.
Rihanna - who appeared at the end of the nine-minute event to Take A Bow - made no reference of her knee graze on Twitter.
Instead, she wrote about the Sunday Times feature about her being the new Princess Diana: "Just so happens I came home drunk to this in a pile of papers outside my hotel room! My lil Bajan behind, never thought these many people would even know my name, now it's next to Princess Diana's on the front of a newspaper! Life can be such a beautiful thing when you let it be #yourejealous :)"