"On #worldcancerday I’m looking back to my visit to Alder Hey Teenage Cancer Trust Unit. @teenage_cancer brings world class cancer care to young people across the UK and alongside my sister Bea and mum @sarahferguson15 I’m a proud patron of this special charity." She wrote.
Both Beatrice and Eugenie were introduced to Teenage Cancer Trust by their mum, and they became Honorary Patrons in 2016.
The Duchess of York also shared a special message to mark World Cancer Day.
“On World Cancer Day, I am thinking of friends and family who have been affected by this terrible disease,” she captioned a picture of herself alongside her daughters and Teenage Cancer Trust founders Dr Adrian and Myrna Whiteson.
“I have been a proud supporter of @teenage_cancer and its founders Dr Adrian and Myrna Whiteson since 1990 and @teencanceramerica and now Beatrice and Eugenie are too. Together we can help more people beat cancer.’