Australian actress Nicole Kidman celebrated her 56th birthday on Tuesday, receiving sweet messages from friends and family. Her husband of 17 years, Keith Urban, shared a candid photo of Kidman admiring nature on Instagram with a loving message. British actress Naomi Watts also posted a tribute to her "darling friend" on social media. The actress and her husband celebrated Father's Day just a few days prior, with Kidman sharing a heartfelt post about Urban being the "coolest dad there is." The couple has two daughters together, while Kidman also has two older children from her previous marriage to Tom Cruise.
