Kim Murray's subtle nod to Bowel Babe Dame Deborah Jones at Wimbledon - 9Honey

Kim donned a £15 (approx. $26.50) white Rebellious Hope T-shirt, which is part of James's collaboration with In the Style and raises money for her charity foundation.

Sophie, Countess of Wessex, was seen wearing a white Rebellious Hope T-shirt on a royal engagement during her visit to Gibraltar earlier this month.

Kate Middleton hasn't worn one of the black or white tees in public yet, but may have one in the cupboard, given the Duke and Duchess of Cambridge showed their support for James publicly earlier this year.

The hospital helped treat James and Prince William is their royal patron.