Keith Urban and Nicole Kidman's baby girl, Sunday Rose, has affectionately been given a nickname, thanks to her striking resemblance to one parent in particular.

"It's fine by me, having a little Keith-ette. When he goes away, I can look at her and see him," Kidman tells Glamour magazine.

"I didn't even get a look in. I think she got my fair skin and that's about it," she elaborated during a recent interview with Oprah Winfrey.

Regardless of who Sunday Rose looks like, the baby has caused an unexpected change in her famous mom. "I cry so easily now, and I don't know why," Kidman says. "It seems something triggered me."

Already a mom to her two children, Connor and Isabella, with ex-husband Tom Cruise, Kidman insists there is no sibling rivalry. She says her teens are used to having a baby around, thanks to Suri, their dad's daughter with wife Katie Holmes.

"They have got now just another baby sister," she says. "But they're very used to having children around. Connor's like, 'I want a boy!' "

Kidman will be a presenter at Wednesday's CMA Awards, alongside her 'Australia' co-star, Hugh Jackman.