Christina Aguilera Wears Blue Wig

Christina Aguilera has been spotted wearing a long blue wig.

The electric blue hairpiece unbelievably makes the star look even more sexy and slick.

She donned the wig in her new video for single, Keeps Gettin' Better, which is released in the shops on Monday.

Christina has proved she is back to her raunchy best, after giving an electric performance earlier this month in London- her first since giving birth to son Max ten months ago.

The sexy singer will also release her greatest hits album, also named Keeps Gettin' Better on November 10.