Princess Charlotte Is 'Super Protective' Over Prince Louis

Princess Charlotte and Prince Louis' special bond was on display during their most recent outing at Kate Middleton's annual carol concert at Westminster Abbey

Prince William and Kate's 3 kids: What to know about George, Charlotte and Louis - Good Morning America

Kate Middleton says Prince George, Princess Charlotte and Prince Louis had been 'beady-eyed

PHOTOS: Every Time Prince Louis Had Princess Charlotte in His Corner

Princess Charlotte took a protective role over Prince Louis at the coronation

Princess Charlotte Is 'Super Protective' Over Prince Louis

Coronation Kids: The Cutest Photos of Prince George, Charlotte and Louis

See Prince Louis Defending Princess Charlotte: Resurfaced Viral Video

Kate Middleton and Prince William have 'done everything they can to protect Prince George, Princess Charlotte and Prince Louis' amidst her cancer battle, sources claim - as insiders reveal the family's plan

Princess Charlotte Sweetly Holds Her Brother Prince Louis's Hand at the Coronation

This clip of Prince Louis protecting Princess Charlotte is going viral

Royal fans go wild over Princess Charlotte's uncanny resemblance to the Queen

Princess Charlotte is Prince Louis' protective big sister in adorable forgotten photo - Cambridgeshire Live

Princess Charlotte Sasses Photographers at Prince Louis' Christening: 'You're Not Coming

Princess Charlotte 'Won't Leave' Prince Louis' Side