Billie Lourd remembered her grandmother Debbie Reynolds on the day of her birthday

By Ale Russian
April 01, 2019 03:29 PM

Billie Lourd remembered her beloved grandmother on the day the Hollywood legend would’ve turned 87.

The 26-year-old actress, who next stars in Booksmart, paid tribute to Debbie Reynolds on Monday with a sweet throwback photo also featuring her late mom Carrie Fisher. The picture shows all three smiling for the camera as Reynolds sits in what looks like a makeup chair.

“Happy birthday abadaba,” Lourd wrote all in emojis, using the nickname she has for her grandma.

Reynolds died in Dec. 2016 after suffering a stroke, just a day after Fisher died of a heart attack at the age of 60. In 2017, Lourd spoke to Ellen DeGeneres about the hardships of adjusting to life without her mom and grandmother.

RELATED: Billie Lourd Talks Losing ‘Goddesses’ Carrie Fisher and Debbie Reynolds: ‘It’s Surreal and Impossible to Deal With’

“It’s completely surreal,” she said. “There’s no way to really explain it — it’s so hard to talk about. If I say I’m doing good, I’m too happy. If I say I’m not doing good, then I’m a mess. So it’s really hard to know what to say about it because it’s so surreal and impossible to deal with.”

Carrie Fisher, Debbie Reynolds and Billie Lourd in 2011
Brian To/FilmMagic

To get through both losses, Lourd told Town & Country she remembered her mother’s sense of humor.

“If life’s not funny, then it’s just true – and that would be unacceptable,” Lourd said. “Even when she [Fisher] died, that was what got me through that whole thing. When Debbie died the next day, I could just picture her saying, ‘Well, she’s upstaging me once again, of course – she had to.’ ”

RELATED: Carrie Fisher Had Heroin, Cocaine in System When She Died, Report Reveals — As Daughter Billie Releases Emotional Statement

After toxicology reports showed Fisher had drugs in her system at the time of her death, Lourd addressed her mom’s battle with drug addiction and mental illness in an exclusive statement to PEOPLE. The American Horror Story star said Fisher would “want her death to encourage people to be open about their struggles.”

“Tons of people grow up with mentally ill parents who have drug problems… It’s such a common thing, and people really don’t talk about it, ” Lourd said about why she decided to make the statement. “It ultimately helped so many more people.”