Donna Summer Donna Summer

Disco legend Donna Summer died Thursday morning at the age of 63, CNN has confirmed.

A cause of death was not revealed, but according to TMZ, the five-time Grammy winner had been battling cancer.

"Early this morning, we lost Donna Summer Sudano, a woman of many gifts, the greatest being her faith," a family statement said. "While we grieve her passing, we are at peace celebrating her extraordinary life and her continued legacy. Words truly can't express how much we appreciate your prayers and love for our family at this sensitive time."

Summer, who became known as the Queen of Disco, began her career as a backup singer for the trio Three Dog Night. She rose to fame in '70s and defined the sound of the decade after launching her solo career with such hit singles as "Last Dance," "Hot Stuff" and "Bad Girls."

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