The uniform is on display in an exhibition dedicated to the 17-year-old education campaigner and her fellow 2014 Nobel Peace Prize winner, Indian Kailash Satyarthi, which the activists jointly inaugurated in Oslo.
While touring the exhibition Malala came across the clothes she was wearing when the Taliban shot her in the head in Pakistan's Swat valley in October 2012 for insisting girls had a right to an education.
The normally composed teen, who nearly died of her injuries but went on to make a stunning recovery after surgery in England, broke down at the sight of her bloodstained scarf, jacket and trousers, which were displayed in a glass case.
Satyarthi, 60, attempted to comfort the girl he said he considered like a "daughter" with a hug and a kiss on the head.
"You are so brave, you are so brave," he was quoted by the Norwegian news agency NTB as saying.
On Wednesday, Malala became the youngest person ever to receive the Nobel Peace Prize.Satyarthi shared the prize for his 35-year battle to free thousands of Indian children from virtual slave labour.
This is the first time Malala's uniform is being shown in public.