Cher has teamed up with an American woman named Erica to give Erica's mum the surprise of a lifetime.
Erica's mum has early onset Alzheimer's and is just 60 years old. She has been a Cher fan since childhood, and Erica revealed that Cher's music is "basically another caregiver" in their household as her music helps with the mum's emotions.
For 8 minutes, Cher chatted to the mother-daughter pair on FaceTime and made their lives.
Writing on Youtube, Erica said: "Cher surprised my mom, who has Alzheimer's, with a FaceTime call and it was the greatest 8 minutes of our lives!"
"If you don't know Robin Steiner, she's 60 with early onset Alzheimer's and has been Cher's biggest fan since childhood. Beyond that, Cher is basically another caregiver in our house - her presence consistently calms my mom when she's frustrated or sad."
"Being able to tell her that and make me and mom's dream come true is a memory we'll both have for a long time. Thanks for watching and helping me educate others on this disease."