Pollyanna Hope met Oscar Pistorius on 8th September just after he won gold in the T44 400 metres with a time of 46.68 seconds, breaking the Paralympic record.
Pollyanna's mother Sarah Hope and her twin-sister Victoria carried the Paralympic torch in Hackney.
They were watched by Pollyanna, who hopes to compete in the Paralympics herself one day as a showjumper. The seven-year-old lost the lower half of her right leg five years ago, in an accident which killed her grandmother, after a bus hit them in Mortlake in West London.
Some estimates are putting the number of people who attended today's Olypic and Paralympic parade at close to a million.
A spokesman for the Mayor's Office said no exact figure was known, but it was in the hundreds of thousands and one of the largest events London has seen.
Prime Minister David Cameron addressed the crowds at the finale of the athletes victory parade outside Buckingham Palace, thanking "all those who made this possible."
London Mayor Boris Johnson addressed the crowds with a rousing and, at times, comical speech at the climax of the athletes victory parade outside Buckingham Palace.