Vlogger Charlotte Eades, who documented her cancer struggle in a series of popular YouTube videos after being diagnosed with an aggressive brain tumour, has died aged 19.
Eades' mother confirmed that she died in hospital on Thursday in a moving final video posted to her YouTube channel.
"Charlotte passed away peacefully at 1.03pm in our local hospital in Brighton. She fought until the last minute and my husband managed to get there 15 minutes before she passed away," she said.
The teenager's brother also added a message, praising his sister for using her videos to raise awareness about cancer treatment and offer support to fellow sufferers.
"It was Charlotte's goal in life to help others. Through her videos Charlotte made an inspirational and definite difference to people's lives," he said.
"I know that she held all of her subscribers very dearly in her heart, and I'd like to thank each and every one of you for your amazing, amazing support."
Eades referred to her brain tumour as "the terminator," and would describe her treatment and side-effects in detail to try and help people understand what living with cancer was really like.
After being diagnosed in 2013, Eades experienced hair-loss, as well as partial loss of hearing and sight while she underwent chemotherapy, radiotherapy, and several operations.
Through her videos, she worked to support charities including Stand Up To Cancer and CLIC Sargent in their campaigns to help children and young people suffering with cancer.
CLIC Sargent called Eades "an amazing woman who inspired many," following the news of her death.
Tributes from Eades' wide base of supporters also flooded Twitter.
Novelist J.D. Hughes called her a "beautiful soul".
Laura Silver is a reporter for BuzzFeed News and is based in London.
Contact Laura Silver at firstname.lastname@example.org.
Got a confidential tip? Submit it here.