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'."
David Cameron thanks his children, recalling when Florence once climbed into a red box and said "take me with you" pic.twitter.com/eYP5QEED80
-- Scott D'Arcy (@DArcysj) July 13, 2016
And everyone thought it was just so adorable.
Florence Cameron pretending to be important government business - a unique childhood indeed pic.twitter.com/MNdJOpORnP
-- Tom Witherow (@TomWitherow) July 13, 2016
Florence Cameron's smiley "I did" when PM talked about her climbing into one of his Red Boxes was def the highlight of the speech.
-- Stace (@stackee) July 13, 2016
I have a lovely picture in my mind of Florence Cameron climbing into a red box and saying "Take me with you "
-- Phyllis Mathewson (@phyllis_hotmail) July 13, 2016
Ohhh Florence Cameron is adorable. Nice, touching tribute from Cameron to his family.
-- Richard Moynihan (@richjm) July 13, 2016
They also thought some of her expressions throughout were super cute.
How cute is Florence Cameron though awwww pic.twitter.com/L5ZrEFkWlA
-- knowingkimberly (@knowingkimberly) July 13, 2016
Sweet smile of Florence Cameron as Dad talks of her climbing into his red boxes. She's only ever known No10 as home pic.twitter.com/9cVaTGC36N
-- Chris Ship (@chrisshipitv) July 13, 2016
I'm a sucker for kids and Florence Cameron is adorable.
-- YourFavBlackAuntie (@greendoondoon) July 13, 2016
Well isn't Florence Cameron the most adorable child you've ever seen in your whole life??
-- Helen James (@lettertodaddy) July 13, 2016