Christina Aguilera in a Cleavage-Baring Outfit at Etta James' Funeral

Maybe she just couldn't help herself. Christina Aguilera let it all hang out while performing Etta James' trademark song, At Last, at the music legend's funeral on Saturday.

At first glance, Aguilera's outfit seemed funeral-appropriate. The Voice star wore a black suit with plain black heels. But look again! The jacket to her suit had a cleavage-baring design more appropriate for a nightclub!

more pictures after the break...
James died on January 20 after a two-year battle against leukemia. "She was a force to be reckoned with," Aguilera said.