Another family tragedy.

As Jackie Siegel mourns the death of her husband, billionaire timeshare king David Siegel, the “Queen of Versailles” star is also saying goodbye to her little sister, Jessica Mallery, from a drug overdose at age 43.

Siegel, 59, made the heartbreaking announcement on her nonprofit, the Victoria’s Voice Foundation’s Instagram page on Tuesday, April 8.

The socialite wrote, “As I mourn the profound loss of my beloved husband David Siegel, who passed away on April 5 at the age of 89, my world was shattered again yesterday by the unexpected loss of my beautiful sister, Jessica Mallery, 43,” along with a photo of her sister.

Her statement continued, “To a scourge we as a family sadly know too well – accidental drug overdose.”

Siegel informed her followers that Mallery “died after using cocaine laced with fentanyl,” adding that her foundation’s work “remains more critical than ever,” and it will continue to raise awareness of substance abuse in her late sister’s honor.

Sadly, the ex-reality star created the foundation in memory of her and David’s late daughter, Victoria, who died in 2015 from a drug overdose.

Siegel shared that her foundation will continue to fight “until this form of grief is a distant memory in this country” and concluded her statement, “Our family appreciates everyone’s love, support and prayers, and we ask for privacy during this extremely difficult time.”

Siegel also shared that her sister’s organs are being donated to help others, and instead of flowers, they ask for donations to be made to the Victoria’s Voice Foundation in Mallery’s honor.

Siegel’s billionaire husband — who lived in one of the most expensive homes in the US — died days ago at 89.

The Westgate Resorts founder had been battling cancer, reported the Las Vegas Journal-Review.

Siegel honored her late husband following his death.

“I wanted to personally reach out and let you know that my husband, David Alan Siegel, passed away this morning,” she wrote on Instagram on Saturday, April 5, sharing a photo of them cutting their wedding cake.

“I was lucky enough to share twenty-five wonderful years with David, and together we raised eight incredible children. His life and legacy live on through them all.”

She also addressed her late daughter, whom David had adopted, and his deceased son in the tribute.

“To say we are devastated is an understatement. But I find comfort in knowing that Victoria was there to greet him—the first thing he heard was ‘Dad,’ followed by a big hug,” she added.

“And of course, Steven is there too,” she wrote. “That thought brings me so much peace.”

In 2022, Siegel opened up about her daughter’s unexpected passing, telling The Post, “When Victoria died, it felt like my world fell apart, and all the money in the world could not bring her back.”

She also revealed that she couldn’t bring herself to step foot into Victoria’s bedroom.

“I don’t even let the cleaners go in her bedroom, it’s been untouched since some of her friends came in to pick some of her things” Siegel shared. “I think I had an emotional breakdown, I left her room alone, hoping she will come home. But the moment just hit me.”

She and the successful entrepreneur married in 2000.

Siegel landed her reality show in 2012, which followed the journey of them building their wildly lavish home. As of January, the construction of the mansion was almost complete.