Sheriff's deputies found Siegel at the Seagull Island residence near Windermere on Saturday afternoon. The teen was taken to a hospital, where she was later pronounced dead, Orange County Florida sheriff's spokesman Jeff Williamson told the Associated Press.
The coroner has not yet determined a cause of death.
David Siegel, who built up his fortune as the founder of time-share company
FOR THE RECORD
12:31 p.m.: A previous version of this post said an attorney for the Siegels did not immediately respond to a request for comment. The attorney contacted no longer represents the Siegels.
Victoria Siegel's parents rose to fame as the subjects of Lauren Greenfield's 2012 documentary about building their 90,000-square-foot Versailles House, a luxe home modeled after the elaborate French palace. It was expected to be the largest home in America.
The home is not yet complete, but the Siegels hoped to finish it by David's 80th birthday in May 2016, according to the Sentinel.
Victoria was the second eldest of the couple's eight children. Just last week, her family was featured on ABC's "Celebrity Wife Swap," in which Jacqueline Siegel, the so-called "Queen of Versailles," switched families with "Party of Five" alum Jeremy London. The matriarch moved to an Oklahoma ranch in the episode and admitted that she and her husband don't spend much time with their children, leaving their care up to the large staff at their private island home.