Rest in peace, Debbie Reynolds and Carrie Fisher.

In the days following the Singin' in the Rain star's death at age 84, it has been revealed that Debbie's "greatest fear" was outliving her beloved daughter.

Carrie sadly passed away at age 60 on Tuesday, Dec. 27 after suffering a heart attack four days prior. Her mother, Debbie, tragically died just one day later from a stroke on Wednesday, Dec. 28.

"It’s not natural to outlive your child. This has always been my greatest fear… I don’t know if I could survive that," Debbie wrote in her 2013 autobiography, Unsinkable.

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Debbie and Carrie in January 2015.

"Carrie is my child and I love her with every ounce of strength I possess," she added.

Debbie was reportedly at her son Todd Fisher's Beverly Hills home discussing Carrie's funeral arrangements when she fell ill on the afternoon of Dec. 28.

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She was taken by EMTs to a nearby emergency room after someone from Todd's house called 911 to report a possible stroke. She allegedly died in the hospital hours later.

According to Todd, Debbie's last words before her death were about her beloved daughter. "I miss her so much. I want to be with Carrie," Debbie said.

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Carrie, Todd and Debbie in June 2001.

"She wanted to be with Carrie," Todd told Variety of his mom's death.

Carrie — most known for playing Princess Leia in the Star Wars films — went into cardiac arrest while on a flight from London to LA on Friday, Dec. 23. Paramedics immediately removed the actress from the flight and rushed her to Ronald Reagan UCLA Medical Center where she was treated for a heart attack. She passed away in the hospital four days later.

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The Hollywood legend and her late husband Eddie Fisher — who died at age 82 of complications from a hip surgery in 2010 — welcomed daughter Carrie in October 1956 and son Todd, 58, in February 1958. Debbie and Eddie were married from 1955 until 1959.

Click through the gallery below to see more stars who sadly died in 2016.