Knowles confuses own image with Shakira's

Beyoncé Knowles is so impressed with the digital imagery on the video for her duet with Shakira, sometimes even she can't tell the two of them apart.

The sexy déjà vu singer teams up with Shakira for her latest hit Beautiful Liar, and admits they did such a good job synchronising their dance moves in the video that she has trouble distinguishing between the pair herself.