Five-year-old Florence Cameron managed to melt the nation's hearts as her dad told a sweet anecdote from their time in No 10.
The former prime minister said in his final speech: "I want to thank my children Nancy, Elwen and Florence for whom Downing Street has been a lovely home over these last six years.
"They sometimes kicked the red boxes full of work - Florence you once climbed into one before a foreign trip and said 'take me with you'."
And everyone thought it was just so adorable.
They also thought some of her expressions throughout were super cute.