The singer has shot straight to the top of the US Billboard chart with her new single, which has sold over 254,000 downloads in the last week.

"I am so thrilled that 'E.T.' has landed at No. 1. I want to thank all the fans who contributed to this amazing feat and radio, which has been an essential part of my continued existence. I truly appreciate all the support of my creative twists and turns," Perry told Billboard.

'ET' is Perry's fourth consecutive number one from her 2010 album 'Teenage Dream'.

The video for 'ET' has been unveiled online. You can watch it here.

(by Holly Frith)