Madonna's brother Christopher Ciccone has died at the age of 63

Ciccone died Friday in Michigan, his representative, Brad Taylor, told The Associated Press on Sunday. He had cancer.

Ciccone had been a dancer since his youth and was closely associated with his sister's rise to pop stardom in the 1980s. He appeared in music videos such as “Lucky Star”, led the artistic direction of their Blond Ambition World Tour and served as tour director for the Girlie Show tour. He also directed music videos for Dolly Parton and Tony Bennett.

In 2008, Ciccone published a bestselling autobiography, Life with My Sister Madonna, in which he wrote about their strained relationship, her romantic entanglements, and memories of his time on tour with her. For two decades he was at her side, choreographing, directing, dressing and helping his sister. He also designed the interiors of their homes in New York, Miami and Los Angeles. He said it was a bit like a marriage sometimes.