Naomi Watts Wishes 'Queen' Nicole Kidman a Happy 57th Birthday: 'I Love You So Much'

Naomi Watts and Nicole Kidman first met as teenagers and have been friends since the 1980s

Naomi Watts is celebrating another trip around the sun for her best friend Nicole Kidman.

On Thursday, June 20, Watts, 55, shared a photo of herself posing with Kidman to Instagram as the Moulin Rouge star celebrated her 57th birthday.

"Happy birthday Nic ??I love you so much #QUEEN ??," Watts wrote in her caption. Other celebrities like Carla Gugino chimed in within the comments of Watts' post to wish Kidman well a well. "Happy birthday @nicolekidman ??????," Gugino, 52, wrote in one comment.

Kidman and Watts have been friends for decades; Watts even reflected on their long-term friendship and their first time meeting when she spoke on Kidman's behalf at the 49th AFI Life Achievement Award Gala in April, when Kidman received one of the film industry's highest awards. In that speech, Watts recalled that she and Kidman first met at an audition for an "'80s swimsuit commercial" and waited several hours for photographers to decide who to cast.

Related: Nicole Kidman Turns 57: All About Her Thriving Career and 'Deep' Love for Husband Keith Urban

"We covered everything, what movies we loved, what friends we had in common, our parents, schools, parties, boyfriends, teenage stuff," Watts recalled, noting that neither she nor Kidman landed the part. As Watts recalled, she missed her bus back home and Kidman was kind enough to help her find her way back via taxi. She even described the Oscar winner as "the most generous person."

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"Back in the Stone Age, we didn't have cell phones or Uber accounts. And no, our mums were not waiting for us outside," Watts recalled of their first meeting. "But Nic offered to spring for a taxi, and she said she would drop me on the way home, even though it was 20 minutes out of her way and it was an extra $15.00 on the meter."

Related: Keith Urban Honors Wife Nicole Kidman for Her Support amid Past 'Addictions' and Rehab: 'She Chose Love'

"She's opened up her homes to me. She's made me feel like part of her family. She was like the sister I'd never had," Watts added at the time, noting that Kidman remained supportive of her through the early parts of her career even after Kidman's own took off.

Watts and Kidman later costarred in the 1991 movie Flirting, though they have not worked together since. Earlier this month, Kidman attended Watts' second wedding to Billy Crudup in Mexico City. "Best wedding weekend in #MexicoCity full of love and fun!!" she wrote over a photo of her and Watts posted to her Instagram Stories at the time. "Congrats to the beautiful bride and groom xx," she added, along with a number of heart emojis.

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