Kensington Palace posts birthday photo of Prince Louis, taken by Catherine

Britain's Prince William and his wife, Catherine, thanked the public for their messages sent to mark the sixth birthday of their youngest son, Louis, on Tuesday.

Kensington Palace posts birthday photo of Prince Louis, taken by Catherine
A smiling boy lies on the grass

Britain's Prince William and his wife, Catherine, thanked the public for their messages sent to mark the sixth birthday of their youngest son, Louis, on Tuesday.