Apparently we can look forward to a “hot and blonde” Britney Spears in the video for upcoming Pussycat Dolls single, When I Grow Up.

As well as scrubbing up nicely for her blink-and-you'll-miss-it cameo, filming is said to have gone off without a hitch.

"It was carefully planned out. In the scene shot, Britney is driving in a car. They all wave at each other as they are passing in traffic - that is it,” a source tells The Sun.

"It is genius and you will love it. Of course, Britney looks hot and blonde."

Er, of course.

Britney received similar praise for her guest spots on U.S TV show How I Met Your Mother.

Let's hope she keeps up the good work.