Royal Family Photographer Reveals How He Made Prince George Giggle

Prince George looked happy as Larry in the photo commemorating the Queen's 90th birthday.

But how did the royal photographer get the two-year-old to crack out such a cheeky grin at just the right moment?

"The whole shoot went swimmingly well," photographer Ranald Mackechnie said.

When asked what made Prince George so happy, he said: "Me! Me making strange faces or putting my hands up on my head."

Watch the video above to see the funny poses Mackechnie pulled to get the perfect shot.