Billie Lourd has said she “learned from the best” as she paid a rare public tribute to her mother, the late Carrie Fisher.

In a heartfelt Instagram post, she shared a photograph of herself as a toddler sitting with Fisher in the back of a car.

Quoting the Princess Leia star in the caption, she wrote: “If my life weren’t funny then it would just be true and that is unacceptable.”

The Scream Queens star added: “Finding the funny might take a while but I learned from the best and her voice will forever be in my head and in my heart.”

Billie, 24, daughter of Fisher and Bryan Lourd, has largely held back from speaking publicly about the death of her mother last month.

Her post follows just one other on her account since the death of Fisher and her grandmother Debbie Reynolds.

Alongside a family photo of the three together, she 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.”

Fisher, 60, died on December 27 after suffering a heart attack on board a flight four days before.

Singin’ In The Rain star Reynolds died a day later at the age of 84.