It's early morning outside theatre, and a team of specialist medical experts gather for a briefing to discuss the unprecedented surgery about to take place.
Vanellope still has no breastbone, leaving her heart covered by just by a thin layer of skin.
Surgeons have come up with a plan to use her ribs to form a protective cage inside her chest.
Consultant paediatric surgeon Nitin Patwardhan was one of the 50-strong medical team at Vanellope's birth on 22 November.
Now he is set to play a leading role again in surgery, which has never been performed like this before.
"I'd lie if I say I don't get nervous," he says. "But having been in this profession for so many years, you actually look forward to it because at the end of the day, you're doing something that will change somebody's life."
He remembers how "everything was unknown" when Vanellope was born, because no-one in the country had ever dealt with a similar case.
A handful of children in the US have also survived this condition.
Ectopia cordis affects only a few cases per million births - and Vanellope was given a less than 10% chance of survival.
But she defied those odds and was allowed home after 14 months in hospital.