Christina Aguilera let it all hang out as she paid her respects to the late blues, jazz and rock legend Etta James at her funeral on Saturday, belting out her rendition of the singer's trademark song 'At Last'.

Although, at first glance, the 31-year-old's outfit seemed appropriate for the occasion, as she was sporting a black suit with plain black heels.

But, on closer look, the jacket to her suit revealed a cleavage-baring design more appropriate for a nightclub.

James died on January 20 after a two-year battle against leukemia.

"She was a force to be reckoned with," Aguilera said. (ANI)