Lovingly named the "Queen of Disco," the 63-year-old was in Florida at the time of her death, according to TMZ. Born LaDonna Adrian Gaines, the 5-time Grammy award winner rose to fame in the '70s with hits like "Hot Stuff," "Bad Girls" and "Love to Love You Baby."
Following the news of Summer's passing, the singer's family released a statement saying that they "are at peace celebrating her extraordinary life and her continued legacy."
TMZ also reports that Summer was working on a forthcoming album at the time of her death.
"RIP #DonnaSummer - dined with her a few months ago, and she sang Amazing Grace to guests with stunning power. Great lady, wonderful talent," Piers Morgan tweeted about the late singer.
Summer is survived by her husband, Brooklyn Dreams co-founder Bruce Sudano, their two children -- Brooklyn and Amanda -- and her daughter, Mimi, from a previous marriage.
Click over to TMZ for more details.