Discoverth e truth behind Kate Middleton's serious demeanor at the St. Patrick's Day parade in London.

Despite appearing unhappy, Kate was actually feeling powerful, according to body language expert Judi James.

James notes that Kate was adopting a more military look than a royal one.

William referred to Kate as "Colonel Catherine" during the parade, adding to her powerful aura.

Kate's serious expression showed how seriously she takes her new role.

Both William and Kate are focused on their royal duties and avoiding drama.

Their increased seriousness may be a response to Prince Harry and Meghan Markle's recent criticisms.

James praises Kate's "immaculate" body language during the parade.

William responded to Kate's serious stare with a proud smile.