As Britain's sovereign, she's spent a lifetime meeting and greeting people of all ages.
But the Queen had to wait patiently for one cheeky little toddler today as he did his best to squirm out of handing over a posy at the unveiling of a new war memorial.
The 90-year-old monarch was joined by the Duke and Duchess of Cambridge and Prince Harry to unveil the statue to Britons who served in Iraq and Afghanistan.
Before leaving the site of the new memorial, the Queen then received a posy from the Lunn family Sergeant Mark Lunn, 29, who was awarded the Military Cross for his actions during a fire-fight in Basra, his wife, Corporal Michelle Lunn, 26, and their two-year-old son Alfie.
The Queen smiled as she approached the couple to chat to them, while the toddler squirmed in his mother's arms.
When the flowers were handed to the monarch, the little boy reached out for them.
Mrs Lunn said later: 'They're so unpredictable children, we tried our best. He was fine up until a few minutes before the Queen arrived.'