The actress paid tribute to her late brother on Wednesday, commemorating three years since his death.
Riley took to her Instagram story on Wednesday to share a throwback photo that paid tribute to both her late brother, as well as her late mother, Lisa Marie Presley.
The snapshot she shared showed a young Benjamin making a playful face while posing for a snapshot with his famous mom.
The actress wrote over the pic, "Missing you both" in cursive font, alongside a heart emoji.
Ben's grandmother, Priscilla, also shared her own message of love and heartbreak, posting a large photo of a rose emoji alongside a touching tribute.
"Needless to say, this has been a very solemn day for me - the anniversary of the passing of my sweet grandson Ben," Priscilla wrote. "Words cannot express how much you are missed ~ Nona."
Benjamin died by suicide at the age of 27 on July 12, 2020. A source told ET at the time that Lisa Marie was "completely heartbroken, inconsolable and beyond devastated but trying to stay strong for her 11-year-old twins and her oldest daughter... She adored that boy. He was the love of her life."
Tragically, Lisa Marie died after suffering cardiac arrest back in January. She was 54. Following her death, Lisa Marie was laid to rest next to her son in the Meditation Garden at Graceland in Memphis, Tennessee.
Wednesday marked a bittersweet day for Riley, who received her first Emmy nomination for her role as Daisy Jones in Daisy Jones & the Six. Riley released a statement after news of her Outstanding Lead Actress in a Limited Series or Movie nomination was announced.
"This is truly the most amazing surprise!" she said. "I feel so lucky to have been a part of Daisy Jones & the Six and to work alongside my amazing cast mates and the entire crew. I am thankful to the Academy for receiving this wonderful nomination and to be recognized alongside the other hugely talented women on TV. And I am thrilled for my castmates who also got recognized! Thank you to Hello Sunshine, Amazon, and thank you to the Academy."
If you or someone you know needs help, please call the National Suicide Prevention Lifeline at 1-800-273-TALK (8255).