Nicole Kidman Leaning on Family, Sister amid Keith Urban Split (Exclusive)

Nicole Kidman has been leaning on her sister amid her split from Keith Urban.

“Nicole’s sister has been a rock, and the entire Kidman family has come together to support one another,” a source tells PEOPLE of the actress’s sibling, Antonia.

PEOPLE confirmed on Monday, Sept. 29, that Kidman, 58, and Urban, 57, have separated after 19 years of marriage.

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TMZ first reported news of the breakup, noting that they had been living apart over the summer.

“She didn’t want this,” the source previously told PEOPLE. “She has been fighting to save the marriage.”

The Big Little Lies actress and the “You’ll Think of Me” singer wed in 2006 and share daughters Sunday, 17, and Faith, 14. (Kidman is also mom to daughter Bella, 32, and son Connor, 30, from her marriage to Tom Cruise.)

The couple celebrated their 19th wedding anniversary in June, which Kidman marked by sharing a cozy picture of the pair on Instagram.

Kidman spent part of the summer filming the sequel to Practical Magic, which wrapped in September, weeks before the news of their split was made public.

Urban, meanwhile, has been touring in North America and Australia this summer. He wraps up his current string of shows this October before heading to the Bahamas next March; he’ll return to the U.S. for shows in May 2026.

“Playing live is what I live to do,” the country star told PEOPLE in May, sharing photos from his first two shows from the High and Alive World Tour. “Looking out from a stage and seeing people singing, forgetting about all the stress in their lives, cutting loose, and feeling ALIVE – that’s what it’s about for me.”

In May 2024, Urban told PEOPLE that he still wants to “impress” Kidman with his performances. “It fires me up a bit more,” he said at the time. “I try to impress her.”

The month prior, Kidman gushed about her family support system, which included the country crooner.

“I’m so lucky that I have Keith, who’s just my love, my deep, deep love. That gives me the ability to go and do whatever I have to do because I know where I can come back to,” she told PEOPLE at the time.