The obsession comes as no surprise to royal watchers who spotted a unicorn keyring on little Charlotte’s backpack as she attended her first day of school at Thomas’s Battersea.
Little Charlotte was also spotted sporting a unicorn purse during a recent outing at the King Power Royal Charity Polo Day.
During the visit, William also revealed he plans to volunteer for the text crisis service Shout.
"I'm aiming to set myself up for it, I really want to do it. Even if I can only do an hour on my laptop. I want to do the training and be able to help."