Rihanna took the Tube to her concert at London's The O2 last night.
The Only Girl In The World hitmaker - dressed casually in a white T-shirt and sunglasses with her hair tied back in a bandana - stunned rush hour commuters and concertgoers when she and her bodyguards boarded the busy Jubilee underground train line to North Greenwich where she happily posed for pictures with fans.
A source said: "She thought it would be funny. Her people agreed, so she popped down to the tube, bought a travelcard and shocked the life out of a few hundred rush hour passengers."
Another commuter added: "She was just like any other passenger, except accompanied by a huge entourage. She was happy to pose for snaps and talk about the gig. She was so down to earth.
"Fans couldn't believe they were sharing a carriage with a world famous pop star."
Rihanna then jumped into a waiting car outside the station which drove her to the venue.
Last night was the first show of Rihanna's 10 dates at The 02.
- BANG! Showbiz