Shailene Woodley has revealed how she "chased" after the lead role in The Fault In Our Stars.
The Golden Globe-nominated actress pleaded with director Josh Boone for the chance to audition for the part of cancer sufferer Hazel Grace Lancaster in the big-screen adaptation of John Green's novel, even after he told her she was too old.
"I chased this project. I was so moved by it so when the director Josh Boone became attached, I asked him to audition and he told me I was too old for Hazel," she said.
"I basically begged him and he flew to Chicago, where I was shooting Divergent, with the casting director and we had dinner. He said it was a lovely dinner, but that he still thought I was too old to play this character, and I said, 'I respect you and I love that you have a strong vision for her, but please just let me audition'."
But her persistence paid off: "I auditioned the next day and I guess, without make-up, I looked young enough to do what he wanted."
Shailene said it was her choice to wear the cannula throughout the film, and shun the make-up.
" It didn't bother me. It was important to me that we did have it in every scene, because you don't often see that in movies," she explained.
"I thought it was brave of 20th Century Fox to make a young adult film where the female lead has plastic tubes in her mouth and no make-up and the male lead has a prosthetic leg - in the day and age of movies like Divergent and The Hunger Games."
The 23-year-old actress also had to ditch her regular daily workouts to play Hazel.
"I'm naturally very athletic. I had to lose muscle and I only had a few weeks to do it, so I basically just did not work out," she said.
"Not even yoga. Nothing for a few weeks. I just walked a lot. If I showed up with strong arms and a glow, that just would not work. It was weird and a bit frustrating to get physical again and get my body back in shape afterwards."
:: The Fault In Our Stars is available now on Blu-ray, DVD and Digital HD.