Carrie Fisher's daughter Billie Lourd pays tribute to her beloved mother and grandmother.

In the space of just two December days, Billie Lourd lost two of the most important women in her life – her mother, Carrie Fisher, and her grandmother, Debbie Reynolds.

Both beloved movie stars, their deaths triggered an outpouring of condolences from around the world; a degree of love and support the third-generation actress says has helped get her through the tragedy.

Sharing a family photograph on Instagram, the 24-year-old wrote, “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.

“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.”

Lourd’s nickname for her grandmother is believed to be a nod to the song Aba Daba Honeymoon Reynolds performed in the 1950 film Two Weeks with Love.

The Scream Queens star is the only child of Fisher and talent agent Bryan Lourd, who were in a relationship for three years from 1991.

Fisher, most famous for playing Princess Leia in the Star Wars franchise, died on December 27, aged 60, after suffering a medical emergency on a flight from London to Los Angeles. The precise cause of her death remains unknown.

Singing in the Rain actress Debbie Reynolds, 84, suffered a stroke the follow day while making preparations for her daughter’s funeral.

Fisher’s brother, Todd, said their mother told him, “I want to be with Carrie” shortly before she died.

❤????‍????‍????❤ 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. 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.

A photo posted by Billie Lourd (@praisethelourd) on Jan 2, 2017 at 10:09am PST

After his sister’s death, Todd Fisher told New York Daily News Billie Lourd would be well looked after financially.

“We want her to have whatever she wants. Carrie wanted that,” he said.

“As far as mum and I are concerned, she gets whatever she wants. There is a trust set up. But we’re all pretty well off.

“We’re very proud of her,” he added, referring to his grieving niece. “She’s handling this with amazing strength.”