Rihanna has knocked Cheryl Cole off the top of the UK singles chart tonight.

The ‘Umbrella’ star, who was beaten to number one by Cole last week, triumphed in mid-week sales with ‘Only Girl (In the World)’.

Both Rihanna’s ‘Only Girl’ and Cole’s ‘Promise This’ are the biggest selling first week singles of the year – discounting the Helping Haiti charity version of REM’s ‘Everybody Hurts’.

Alexis Jordan entered the chart at number three and Katy Perry went up two places to number four.

Watch the video for Rihanna’s ‘Only Girl (In The World)’ below: