In a new interview with Variety, the Australian actress says, "I love Lucille, having looked now and delved into her. She's an amazing woman."
"I'm very excited for people to see what Aaron (Sorkin) found out about her... I didn't know any of this."
Javier Bardem will star opposite Nicole as Lucille's husband Desi Arnaz in the Amazon movie.
"With Aaron's words and his direction and Javier... that's kind of a wonderful prospect... Give it a go. Try my best. See if I can do it."
Nicole has one very important fan in her corner - Lucille and Desi's daughter Lucie Arnaz, who has expressed her support for the actress in a Facebook video.
"There seems to be a lot of discussion about: 'Nicole Kidman, it should be Debra Messing, it should be Carole Cook,' I don't know," Lucie said.
"Here's the deal, what you should understand: We are not doing a remake of 'I Love Lucy'. No one has to impersonate Lucy Ricardo... It's the story of Lucille Ball - my actual mother - not Lucy Ricardo and her husband Desi Arnaz, my dad - not Ricky Ricardo..."
"I hope I can set the record straight here and say stop arguing about 'Who should play it? She doesn't look like her? The nose isn't the same, she isn't as funny'... Just trust us. It's gonna be a nice film."