Nicole Kidman celebrated a major family milestone as her eldest daughter, Sunday Rose, turned 18.

On Tuesday, July 7, the Oscar-winning actress marked the occasion with a heartfelt Instagram tribute, sharing two childhood photos of Sunday Rose, whom she shares with ex-husband Keith Urban.

One of the throwback images showed Kidman cradling her daughter as a toddler, while another captured Sunday Rose walking away from the camera wearing angel wings. 

Referencing the nostalgic photos, the Practical Magic star wrote, “Happy 18th my angel, you couldn’t be more loved,” adding a heart emoji and tagging her daughter’s Instagram account.

Sunday Rose is the eldest of Kidman and Urban’s two daughters. The former couple also share 15-year-old Faith Margaret. Kidman filed for divorce from the country singer in September 2025 after 19 years of marriage, with the split finalised in January.

The actress is also mother to Bella, 33, and Connor, 31, whom she shares with ex-husband Tom Cruise.

Sunday Rose has gradually stepped into the public eye in recent years, making select appearances alongside her mother while largely maintaining a private life.

Kidman's latest post offered a rare glimpse into her daughter's early years, as the actress celebrated the milestone birthday with a simple but affectionate message that reflected on how much time has passed since those childhood moments.