Nicole Kidman holds her husband Keith Urban. Hollywood actress Nicole Kidman gave birth to her first child, a baby girl named Sunday Rose.(Photo: Chinadaily) Photo Gallery>>>

    BEIJING, July 8 (Xinhuanet) -- So, why did Nicole Kidman and Keith Urban name their baby girl Sunday Rose?

    One Kidman source said before the birth, Urban penned a song titled "Sunday" about his little miracle-to-be.

    "(Urban and Kidman) knew the sex of the baby beforehand, and once Keith wrote the song, they thought it was the perfect name for their baby," said the Kidman source. "They really didn't know she'd almost be born on Sunday."

    Or was the name Kidman's last jab at Scientology?

    "Nicole is a Catholic, and Sunday was an important religious day for her until she was involved in Scientology," said the source. "She’s still bitter about her experience with Scientology and the fact her baby's name could be perceived as one last jab doesn't exactly upset her."

    What's up next for the new family of three? "They're going to nest in Nashville for a while."

    (Agencies)