Alicia Keys attended the 2011 Keep A Child Alive Black Ball in London last night. The event raises money to provide treatment and support to families with HIV/AIDS in Africa and India.

The singer wore a custom Givenchy Haute Couture by Riccardo Tisci custom-made long bustier black gown.

The gown was embroidered with black ostrich feathers on the skirt and accented with a gold metal articulated belt.

She added Givenchy accessories including suede leather sandals and black satin clutch, plus Chaumet jewels to her look.

Her dramatic dress is perfect for this ball, but I find the nude back panel and the cascading ruffle detail distracting.

Alicia also performed at this event with Tinie Tempah wearing another Givenchy look.

Her short zipped black lace and silk dress was worn with black bondage leather sandals and Chaumet jewels.

Credit: Getty