Grammy-winning singer Adele says pop star Britney Spears is the "queen".

Adele has a plan to "crack a joke" when she meets Spears for the first meet, so that they are able to break the ice, reports femalefirst.co.uk.

She told National Public Radio: "Britney is the queen. I love her. So yeah, sometimes it is a bit intense. But I usually crack a joke, and then it breaks the ice."