Nicole Kidman leans on sister Antonia in first outing since bombshell Keith Urban divorce

Family first.

Nicole Kidman has been spotted for the first time since her shocking split from Keith Urban. She and her younger sister, Antonia, were seen going on a hike in Nashville, Tenn., on Wednesday in pictures obtained by the Daily Mail.

Nicole wore dark leggings, a form-fitting athletic jacket and white sneakers during the casual outing. She also sported a baseball hat and black sunglasses, perhaps wanting to go incognito. Antonia walked beside her in a pink T-shirt, drawstring khaki pants and blue sneakers.

Nicole appeared deep in conversation with Antonia, and she cracked a smile in one photo.

Nicole reportedly laughed with her sister as they hiked for four miles on a trail not far from the “Big Little Lies” star’s mansion.

“At times, she gesticulated expressively,” the outlet reported. “At others, she linked arms with her sister and placed her hands on her heart.”

Antonia, 55, has been Nicole’s main source of support during this difficult time, People reported.

“Nicole’s sister [Antonia] has been a rock, and the entire Kidman family has come together to support one another,” a source told the outlet.

Wednesday’s outing comes two days after Page Six confirmed Nicole and Urban, her husband of 19 years, had separated.

A source told Page Six about the A-listers’ surprising split, “sometimes relationships just run their course.”

But according to the source, Kidman, 58, “did not want the separation and was trying to save things.”

On Tuesday, Nicole officially filed for divorce from the country singer, citing “irreconcilable differences” as the reason for the split. The date of separation is listed as the “date of filing,” meaning Sept. 30.

Court documents filed in Nashville Tuesday and obtained by Page Six show the Oscar winner has requested that she be the “primary residential parent,” with custody of their daughters — Sunday Rose, 17, and Faith Margaret, 14 — 306 days out of the year, while their father has them for 59 days.

TMZ reported that Urban, 57, is already “with another woman.”

“Let’s just say, Nicole doesn’t dispute that, but she’s still shocked over it,” a source told the outlet.

Another insider claimed, “It’s all over Nashville.”