The 24-year-old was supposed to rehearse in Dagenham, London in the morning, but a night before she partied till late celebrating her win for "We Found Love" as the best video of the year at the MTV awards in LA, reported Sun Online.
"Rihanna had a private jet waiting for her on the runway in LA to get her to London but she kept it waiting as she celebrated her VMA win for We Found Love.
"She eventually landed late and went straight to the hotel, missing rehearsals for her guest spot singing Princess Of China with Coldplay," a source said.
However, Chris Martin, the front man of the band got some volunteers and continued the rehearsals.
"Over in Dagenham, Chris Martin got volunteers to sing along to Rihanna's part," the source said.
