In October 2011, commuter Lisa-Marie O'Keeffe was excited to spot a familiar face on the Tube. Rihanna was on her way to a gig at the o2. She said the star was telling excited fans to "hold on tight" and was "being very motherly".
Another commuter, Adrienne Amando, said Rihanna was with her minders and manager, saying "she was so gracious and so humble and so lovely, it was wonderful"
More top news
CCTV and images show man suspected of trying to set the north London mosque alight in alleged Islamophobic hate crime
Detectives investigating a man's body washed up on the shores of the river have arrested a second man on suspicion of murder.
Keepers have the celebrating the arrival of the western lowland gorilla to 22-year-old mother Effie in captivity at the zoo.