Debbie Reynolds and Carrie Fisher’s family will gather to say goodbye to the beloved actresses later this week.

A family memorial for both Fisher and Reynolds is planned for Thursday, Dec. 5, a source close to the family tells ET, adding that there may be a more public celebration down the road.

WATCH: Debbie Reynolds and Carrie Fisher Documentary ‘Bright Lights’ Set for January Premiere on HBO

Fisher’s brother and Reynolds’ son, Todd Fisher, revealed on Friday that he was planning a joint funeral for the two, who died a day apart. The actresses will be buried next to each other at Forest Lawn Memorial Park.

“My mother loves hummingbirds, and had hummingbirds in her yard,” Todd explained in an interview with “20/20”. “We were going all over the place, and we got to this one place to look at this one thing, these hummingbirds came, and it was just like ‘fait accompli,’ as my mother would say.”

Fisher died at age 60 on Tuesday, less than a week after going into cardiac arrest during a flight from London to Los Angeles, On Wednesday, Reynolds died from a suspected stroke at 84 years old.

“She just left to be with Carrie,” Todd said, adding that from his point of view, his mother’s death was “destiny” because she “didn’t want to leave Carrie and did not want her to be alone.”

EXCLUSIVE: Inside Carrie Fisher and Debbie Reynolds’ Unique Mother-Daughter Relationship

Carrie’s daughter, Billie Lourd, broke her silence on Monday to thank fans for their support during this difficult time.

“Receiving all of your prayers and kind words over the past week has given me strength during a time I thought strength could not exist,” the 24-year-old “Scream Queens” star wrote on Instagram, alongside a touching photo of herself with her mother and grandmother. “There are no words to express how much I will miss my Abadaba and my one and only Momby. Your love and support means the world to me.”

See more in the video below.

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