Victoria Siegel, daughter of The Queen of Versailles stars David and Jackie Siegel, was found dead at 18 in the family's Windermere, Fla. home on Saturday.
Authorities found the 18-year-old unresponsive, according to Orange County sheriff's spokesman Jeff Williamson told the Orlando Sentinel. The heiress was subsequently pronounced dead at Ocoee's Health Central Hospital.
Her mother Jackie wrote on her Facebook page, "It is with great sadness that we ask you to respect our privacy during this tragic time and the loss of our beloved daughter, Victoria. Thank you all for your prayers and for your support.
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"As more information comes out the family will share it, until that time there is no comment."
The family, which owns Westgate Resorts, gained fame via a 2012 documentary that chronicled the building of their 90,000 sq. foot mansion, ultimately resulting in a lawsuit against filmmaker Lauren Greenfield, as they said "false and defamatory statements" were made in the production. An arbitrator shut down the suit in March 2014, saying that the couple had "actively promoted" the doc.
They recently popped up on a June 3 episode of ABC's Wife Swap.
The cause of death is still under investigation from the medical examiner, Williamson told the paper.