The Star Wars hero has become synonymous with the brown jacket he has donned for the movie franchise, including a leather version he wore for the latest installment - Star Wars: The Force Awakens.

Now Harrison, 73, has revealed the jacket is up for grabs at an upcoming auction, with proceeds going to the New York University's Langone centre.

Harrison's daughter Georgia Ford, 25, hasn't had an epileptic seizure for the past eight years after being treated at the NYU Langone. Prior to that however, she was repeatedly misdiagnosed and was even prescribed migraine medicine for many years before getting a proper diagnosis as a teenager.

Speaking to Page about the auction Harrison confirmed, “I was wearing it throughout the film.” However, he admitted that he would have a difficult task getting it back off one of the doctors at the research facility.

“Dr. Devinksy really wanted this jacket, and it fits him like a glove," he joked.

The star first opened up about his daughter's illness earlier this month (Mar16) when he attended an event alongside Georgia at the NYU Langone Medical Center's Find a Cure for Epilepsy and Seizures (FACES) department.

"She is joining me to thank FACES. I admire a lot of things about her. I admire her talent, her strength. She's my hero. I love her," he told the New York Daily News.

Harrison has five children, including Georgia and Malcolm, 28, with his ex-wife Melissa Mathison who died in 2014 aged 65 following a battle with cancer.

The star is also father to Benjamin, 48 and Willard, 46, from his marriage to Mary Marquardt as well as 15-year-old son Liam, who his actress wife Calista Flockhart adopted before they met.

Speaking at the event, Harrison admitted being a father is not easy especially when your child faces a lifelong condition such as epilepsy which causes violent seizures.

"When you have a loved one who suffers from this disease, it can be devastating," he revealed. "You know how it affects their lives, their future, their opportunities and you want desperately to find mitigation. You want to find a way that they can live a comfortable and effective life."

The star, whose character Han was killed off in the last Star Wars movie, can next be seen reprising his role as Indiana Jones in the fifth installment of the popular action hero franchise, due out in 2019.