Less than a week after the sudden passing of Fisher and Reynolds, the Scream Queens star took to Instagram on Monday morning to share a heartbreakingly sweet photo and message with the world.
"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 actress writes. "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."
The Instagram photo features Lourd as a little girl sticking out her tongue while her mother and grandmother share smiles to the camera.
Fisher died at age 60 on Dec. 27, days after going into cardiac arrest aboard a Los Angeles-bound flight from London. The following day, Reynolds died from a suspected stroke at 84 years old.
Lourd has always been candid about her close relationship with her iconic mother and grandmother. Just a few weeks ago, the blonde beauty stopped by Late Night With Seth Meyersand shared details about their family dynamic as three generations of actresses.
"First of all, she gets really upset when I get called 'Carrie Fisher's daughter.' She wants people to call me 'Debbie Reynolds' granddaughter.' It's very offensive to her," Lourd joked to Meyers of her grandmother. "She does not like to be cut out -- not at all. She started it. It's her fault [that I'm an actress.]"
Lourd, who has been starring as Chanel #3 for the past two seasons in the Fox comedy Scream Queens, made her film debut as Lieutenant Connix, opposite her mother's Princess Leia, in Star Wars: The Force Awakens.
Press play on the video below to watch Lourd's uncanny impression of her grandmother.