Ever since Luke Perry's tragic death from a stoke earlier this year, he's received a massive outpouring of loving tributes from fans, friends, and family.
Luke's longtime friend Shannen Doherty was one of the many stars who spoke out to honor him.
Now Shannen has revealed she'll make an appearance on Riverdale in an upcoming epsisode that will pay tribute to Luke's memory.
Shannen returned to Instagram on Sunday to share some cute throwback photos from when Shannen and Luke were costars on Beverly Hills 90210.
The caption included with the post revealed that Riverdale would be doing a tribute for Luke in the upcoming season.
Shannen also shared that she had been cast in the episode, which she felt did a beautiful job of remembering her late costar.
"I am deeply honored to pay tribute to Luke on Riverdale," Shannen writes.
She continues, "The care in which this show takes in honoring his memory is beautiful."
"He is missed," she added in conclusion, "Today. Tomorrow. Forever."
As Fred Andrews, father of main charater Archie Adrews, Luke played a major role on Riverdale.
He appeared in nearly every episode of the hit CW series until his death at age 52.
The show will definitely not be the same without Fred's calm, authoritative presence constantly calling on Archie to make the honest, upright choice.
Riverdale will have to make quite an adjustment to make room for Fred's death in the midst of its over-the-top, fast-moving storyline.
After Luke's death, Fred was missing from the last few episodes of season three, but the show has yet to adress his absence in any way.
We don't yet know what role Shannen Doherty will play on the show, but it's a safe bet her character will be connected to Luke's somehow.
According to report from Variety, Shannen's casting was announced at Comic-Con on the same day of her post.
During a Comic-Con panel, Riverdale creator Robert Aguirre-Sacasa told fans a bit more about the upcoming tribute.
The episode will "reflect Perry's enduring legacy and the indelible imprint his character" left on the show.
He shared that Shannen's cameo would be a "very emotional" one.
It was "something that Luke wanted to happen since season one," he added.
"They were such good friends," Aguirre-Sacasa said of Shannen and Luke.
"When we were putting together this tribute episode," he explained, "we wanted to make it as special as possible."
"And so," he went on, "we asked Shannen to do a pivotal, super-emotional role."
"She read the script," he recounted, "and immediately said 'Yes.' It's very impactful."
Aguirre-Sacasa also took to his Twitter account on Friday to reveal that the episode would be the season four premier.
"Probably the most important episode of #Riverdale we'll do this year," he tweeted, "if not ever."
He went on to say he was "Thankful for this opportunity to honor Luke & Fred."
The tweet included a photo of the script for the episode, revealing its touching title: "In Memoriam."
We're absolutely going to miss Luke Perry on Riverdale, but we're so excited to see him honored on-screen.
And we can't wait to see how the show handles Fred's passing, or if Shannen's role kicks the story off in some crazy new direction.
Catch the Riverdale season four premier Wednesday, October 9 on The CW.