Tori Spelling Promises to 'Carry the Torch on' for Shannen Doherty as She Praises Her Late Costar's 'Rebel' Nature

Calling her '90210' costar "a fire who’s flame went out too soon," Spelling remembered how Doherty was a loyal friend: "She always stuck up for me. Always had my back. Always believed in me when I didn’t or couldn’t believe in myself"

Tori Spelling is planning to keep Shannen Doherty’s spirit alive following her death.

Spelling — who starred alongside Doherty on Beverly Hills, 90210 —  shared an emotional tribute to the late star on Instagram on July 15 alongside several photos of her and Doherty over the years.

“F--- them… is what Shan would say if I told her I felt pressure to have to summarize via social media a 36 year relationship and the grief I feel for a fire who’s flame went out too soon,” she shared.

Related: Luke Perry's Daughter Honors Her Late Father's 90210 Costar Shannen Doherty in Touching Tribute

Spelling, who played Donna Martin on 90210, went on to reflect on the early days of her friendship with Doherty while working together on the hit teen drama series.

“I was 15 when Shan and I met,” she recalled. “I was the boss’s daughter with no voice and she was the star with a big voice. She took me under her wing. She gave me the belief I had a voice and was worthy.”

“We became fast best friends,” she continued. “We were each others wing women, true confidantes, support systems navigating bad relationships, roomates of sorts at times, travel buddies, and so much more. She always stuck up for me. Always had my back. Always believed in me when I didn’t or couldn’t believe in myself.”

While noting the pair were “young” when they first met, Spelling explained, “We let a lot of outside and inside influences influence our friendship.”

Related: Sarah Michelle Gellar Struggles to 'Find the Right Words' in Wake of Longtime Friend Shannen Doherty's Death: 'So Much Love'

“In a world where we often don’t get to make up with the childhood friendships that formed so much of the adult you become, we got that chance,” she shared. “I’m grateful @theshando and I got to go back in time as adult friends and remember why we truly loved each other to begin with. To reminisce. And, to iconically laugh again like we used to. No one could make me laugh like that. Core laughs!”

Spelling called her late costar — who played Brenda Walsh on the teen drama series for four seasons until her character was written off in 1994  —  “a rebel in an era when most women didn’t feel comfortable being strong.”

“She never tried she just was,” she recalled. “She empowered sexiness, strength, 2 f---s given, empathy, and all topped off with wicked humor! Her sardonic humor was one of my faves. And, no one made a frito pie like Shan!”

She concluded her tribute with a message for Doherty, vowing to keep her spirit alive. “Shan… I’ll carry the torch on. Take on my power! And, I’ll stay rebellious for you. Love you with all my heart. Always. 🖤💔”

Related: Charmed Stars React to Shannen Doherty's Death at 53: She 'Had the Heart of a Lion,' Says Rose McGowan

PEOPLE confirmed on Sunday, July 14, that Doherty died at age 53 after years of living with cancer.

"It is with a heavy heart that I confirm the passing of actress Shannen Doherty. On Saturday, July 13, she lost her battle with cancer after many years of fighting the disease," the actress' longtime publicist, Leslie Sloane, said in a statement.

"The devoted daughter, sister, aunt and friend was surrounded by her loved ones as well as her dog, Bowie. The family asks for their privacy at this time so they can grieve in peace," Sloane continued.

Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories.

Shortly after the news broke, Spelling shared  a selfie with Doherty on her Instagram Stories with a row of broken hearts. "I don't have outward words yet, but WE knew and that's what matters," she wrote at the time.

In addition to Spelling, Beverly Hills, 90210 alums Jennie Garth, Jason Priestley, and Gabrielle Carteris also remembered the late actress.

For more People news, make sure to sign up for our newsletter!

Read the original article on People.