Billie Lourd paid tribute to Carrie Fisher on what would’ve been her mother’s 68th birthday. The “Star Wars” icon died on Dec. 27, 2016, at the age of 60.

“Dead person birthdays are weird to say the least,” Lourd wrote on Instagram Monday. “On my mom’s birthday every year, I try to celebrate her as much as possible, but today I really wanted to celebrate her with her. Some years my grief makes me feel the warmth of her love, some years it makes me angry, some years I feel numb but today when I woke up I just felt sad. I didn’t want to celebrate, I just wanted my mom.”

Lourd added that, amid her grief, she googled the average age of death among women, which is listed at 80.2 years. “My mom died when she was 60. 60 is too damn young to die,” the “Booksmart” actor said.

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She also shared her search on annual drug overdose deaths indicated a rate of over 100,000 people per year and expressed her struggles to help her mother get sober.

“Sadly my mom couldn’t ever escape her addiction,” Lourd said in the post. “But while she was alive she always shared the ups and downs of that struggle with others in hopes it would help them escape their own addiction. As an addict, being open about the struggle is the only way through. And same goes for those of us affected by that struggle. Sending my love to anyone out there who has lost someone to drug addiction. You are not alone. ❤️”

Lourd starred opposite her mother in the 2017 film “Star Wars: The Last Jedi.” She played Lieutenant Connix while Fisher played Princess Leia.

You can read Lourd’s full tribute to her mother below:

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