Songstress Shakira has revealed that she believes Rihanna is the sexiest woman alive because she doesn't have to try like most women do.

The pair worked together on their collaboration for 'Can't Remember To Forget You' and she explained to Magic FM that she thinks the 'Diamonds' beauty just has natural sex appeal, which isn't turned on for the cameras:

"The thing about Rihanna is that she is such a natural, she doesn't need a camera to be in front of her to react like she does... she is like that every second of the day. In my case, I need a countdown to be sexy but she's just like that the whole time, that's her. She is without a doubt the sexiest woman alive!"

The superstar went on to add that working with the Bajan sensation was incredibly enjoyable and really easy: "She is very humble and sweet and warm and that made it super easy - the interaction between the two of us."

Watch Shakira's new music video for 'Dare (La La La)' here: