Jason Priestley posted an old photo on Instagram of the two of them together, with his arm slung around Perry’s neck.
“I don’t even have the words... miss you my brother... May you Rest In Peace...,” Priestley wrote.
Priestley had spoken out after Perry's death last year, sharing an old photo and a more recent one with some words trying to capture his emotions.
"Luke was not only a star, he was an incredibly bright light that was extinguished far too soon... and that is why I, and so many others, are in so much pain today," he wrote, in part, on Instagram.
On Wednesday, fellow “90210” star Ian Ziering also posted a picture of himself with Perry to commemorate his passing.
“Hard to believe it’s been a year since losing Luke. Though time heals wounds, the pain of loss lasts forever. Miss you so much pal,” he captioned the photo.
“Here’s a drink to ya Luke , I’m not a big throw back person i’m all about the present and the future and I am grateful for the work I’ve been able to do the last couple years , but today a drink in your honor and getting a chance to work with you and know you back in the day respect,” he captioned the pictures, all of which feature Young holding a drink.
“Also Once upon a time in Hollywood is the best film I’ve seen all year , was special to see luke in this film , great film I just finally saw it , Cinema at its best - really captured the essence of living in Hollywood.”