United Kingdom, Jan. 31 -- Nicole Kidman has revealed she bought the original handwritten lyrics sheet for Sir Elton John's 'Your Song'.

The 57-year-old actress spilled that she purchased the sought-after memorabilia for the 1970 hit, which features in her 2001 film 'Moulin Rouge!', from 77-year-old Elton's longtime co-writer Bernie Taupin, 74.

The 'Babygirl' star - who performed a duet of the tune with her country music star spouse Keith Urban, 57, in 2019 - treasures it so much, she wasn't willing to share where she keeps it.

Talking about signing autographs on 'The Late Show With Stephen Colbert' this week, Nicole said: "Well, I've asked people to sign a copy of a book. Philip Roth and Elton John."

She continued: "That was because ...