Nicole Kidman is set to star as comedy legend Lucille Ball in Aaron Sorkin's upcoming biopic "Being the Ricardos." Although Ball's daughter, Lucie Arnaz, hasn't seen the finished product, she's already raving about the actress.

Speaking with Palm Springs Life magazine, Arnaz gushed, "Nicole did a spectacular job."

"The two days that I watched, though, were both little flashbacks, so she was playing Lucy in the late '30s and mid-'40s," she went on. "She wasn't Lucy of Lucy Ricardo fame yet, so it was a trifle different. And I know she meant it to be, so it could feel different. But boy, what she did was astounding. She's got such poise and class."

Alongside Kidman, Javier Bardem was cast as Desi Arnaz, Ball's husband and Lucie Arnaz's dad.

In January, Lucie Arnaz defended Kidman's casting after some expressed that they felt another actress might be better suited for the role.

"Here's the deal. We are not doing a remake of 'I Love Lucy.' No one has to impersonate Lucy Ricardo, nor do the Vitameatavegamin routine or the chocolate factory routine or any of the silly things," Arnaz explained in a Facebook video at the time. "It's the story of Lucille Ball, my actual mother, not Lucy Ricardo, and her husband, Dezi Arnaz, my dad, not Ricky Ricardo."

A release date for "Being the Ricardos" has yet to be announced.