Rosa Elizabeth embraces her daughter in one photo – both ladies looking as if they're carrying the weight of the diagnosis and head-shaving process heavy on their hearts.
Doherty, 45, chopps her own hair off in another photo, and pauses for a smiling photo with her mom and friend in another.
She appears to have some lighthearted fun with the process at one point, letting her hair stand up on its end and smirking at the camera.
By the end, the Beverly Hills 90210 alum appears strong, smiling in a selfie with Kortright-Shilstat and her short-new haircut.
Puerto Rican fashion model Kortright-Shilstat, who appears to have shaved Doherty's head, posted the same selfie together with Doherty, along with a message of support to her friend.
"I couldn't be prouder of you today," she wrote. "Your strength and courage is so inspiring and I am so very lucky to have you in my life."
"Thank you for blindly trusting me today to help you with such a big step. I will forever be there for you no matter what," she added.