Rihanna sings 'Happy Birthday' to Louis Tomlinson's girlfriend - video

Rihanna has sent birthday greetings to One Direction star Louis Tomlinson's girlfriend Eleanor Calder.

The 'We Found Love' singer posted a special YouTube video of herself singing 'Happy Birthday' to Calder, who turned 20 on Monday (July 16).



Rihanna took time away from her Sardinian vacation specifically to record the birthday greeting as a favour to the One Direction star.

Calder and Tomlinson were first linked last September, after reportedly being set-up by a friend of Harry Styles.

Tomlinson notably defended Calder in April when the sociology student was subject to abuse from One Direction fans on Twitter.

The couple were also rumoured to have got engaged earlier this month, but those claims were swiftly denied by One Direction's PR firm.

Watch One Direction's 'What Makes You Beautiful' music video below: