Billie Lourd with grandmother Debbie Reynolds and mom Carrie Fisher in 2015.Photo: Kevin Mazur/WireImage

Billie Lourd, Carrie Fisher and Debbie Reynolds

Billie Lourdis explaining her grieving process, five years after the death of her momCarrie Fisher.

Fisherdiedat 60 on December 27, 2016, after suffering a heart attack. One day later, Fisher’s mother (Lourd’s grandmother) Debbie Reynolds also died; she was 84. Marking the five-year anniversary since Fisher’s death a day early, Lourdshared a throwback photoon Instagram of herself as a child next to theStarWarsactress and a koala.

“And that’s how grief should be - all things all at once - actually there is no ‘should’ in grief - grief just is whatever it is for you and that is how it ‘should be,’ " she added.

RELATED GALLERY:Carrie Fisher’s Life in Photos

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In October, Lourdopened up on the podcastNew Dayabout the grief she felt after losing her mother and grandmother. “It was brutal. It was really, really brutal, and I still hesitate and stutter because it’s really hard for me,“Lourd saidat the time.

TheScream Queensstar — who shares 15-month-old son Kingston Fisher with fiancé Austen Rydell — described her late mom and grandma as her “favorite people,” adding that she misses her mom “every day.”

“She was the greatest, funniest person ever,” Lourd said of Fisher. “She was my best f—— friend ever. There’s no one who will ever be as funny as she is. She was just— she is amazing.”

source: people.com