They're two of the biggest pop stars in the world and frequently compared to each other. So we want to know how good you are at telling the difference between Rita Ora and Rihanna.
Rita Ora And Frank Ocean Added To T In The Park Festival 2013 Line-Up
The 'R.I.P.' singer says she's thrilled to be heading to Scotland for this year's event.
Rita Ora and US star Frank Ocean have been the latest names added to the line-up at this year's T In The Park Festival.
The 'Shine Ya Light' singer will be heading to Balado in Kinross for the Scottish event and told fans on Twitter that she was excited to be on the bill.
She wrote: "#TITP2013 yes so happy to be performing at @Tinthepark !"
This year's festival will be headlined by British band Mumford & Sons as well as The Killers and Rihanna.
Other acts also playing the event include The Script, Emeli Sande and Dizzee Rascal.
Calvin Harris, Beady Eye and US rapper Snoop Dogg will also be performing.
The '212' star also claimed that Rita was unhappy at being "Rihanna's understudy".
Latest Rita Ora
The 'Radioactive' singer has hinted that her relationship with the US star has inspired some of her new music.
The 'Bounce' DJ was named Songwriter Of The Year at the prestigious ceremony in London last night.
The 'R.I.P' singer is said to have been suggested for the role by the Queen of pop's daughter Lourdes.
The 'Radioactive' singer collaborated with Rankin on the newly unveiled remix video.