Daisy Ridley has admitted that learning to wield a lightsaber for 'Star Wars: The Last Jedi' was the ''hardest thing'' she has done as an actress.

The 25-year-old British star reprises her role as Force-sensitive Rey in the eighth film in the sci-fi saga and underwent a demanding training regime with fight coordinator Lian Yang which required her to really push herself.

Speaking to Vanity Fair at the world premiere of the eighth instalment of the franchise in the Shrine Auditorium in Los Angeles on Sunday (10.12.17), Ridley said: ''It was the hardest thing I have done physically. I really had to push myself. I was training around filming, but I was very, very happy with how strong I looked and felt. What you see in the movie is really me. No special effects.''

The new movie - helmed by Rian Johnson - is focused on Rey and her relationship with Jedi Master Luke Skywalker (Mark Hamill), who she finds at the end of the last movie 'The Force Awakens'.

Hamill is not the only original trilogy character coming back in 'The Last Jedi' as the late Carrie Fisher is making her final appearance as General Leia Organa, following the actress' shock death last December at the age of 60.