The teen, who trains at the Philippa Campbell School of Ballet, was one of the few Kiwi dancers selected to compete at the competition, which wrapped up last week, and the only one to make the top ranks.
The week-long competition, involving a gruelling schedule of workshops and performances, is often the place where fulltime dance schools and companies from around the world go to scout out new talent.
Lilly, a student at Epsom Girls Grammar, was offered seven scholarships that could open doors to a professional career as a dancer. She's taken up three: one for a summer school at the Canada National Ballet in July, another for an international training programme with the Australian Ballet School and another week-long course at the Royal Ballet School in England in 2017.
Ballet teacher Joye Lowe said Lilly had not only talent, but the passion and dedication to succeed.
"She works hard."
Ms Lowe has taught the young dancer since she was about 7 or 8 but said it wasn't until Lilly was 11 that her potential shone through.
"By then she had developed more of an artistic quality, plus the technique and the musicality," Ms Lowe said.
"I looked at Lilly and could see she was going to be a dancer."