Pinkis one of the hardest working women in showbiz — andJustin Timberlakewants everyone to know that.

The 38-year-old singer found herself in hot water when she wasphotographed relaxing with her children at Byron Bay beachon Friday afterpostponing the first Sydney dateof herBeautiful Trauma World Tourdue to an upper respiratory infection.

After reading her defense, Timberlake went on to praise the singer’s incredible work ethic, adding that juggling being a mother of two with entertaining thousands of fans every time you step out onstage is incredibly difficult work.

“The REALEST,” he wrote as he began his sweet note.

“I’m sorry, sis. But I gotta jump in too…” he remarked. “As an artist who has had the fortune of sharing the stage twice on tour with this incomparable BADASS (once with ‘NSync and once as a solo artist), I’m here to tell you that you won’t find a harder working, more authentically talented, and more thankful for her place on that stage and her fans than this woman. Night in and night out… the woman just brings it. But DAY 1’s and 2’s know that.”

Frazer Harrison/Getty Images; Charles Sykes/Bravo/NBCU Photo Bank/Getty Images

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Justin Timberlakeand Pink

“And NOW… as a parent on tour as well, and an artist who LOVES their fans just as much and wants to give them an unprecedented experience… AND is currently battling an injury, a sinus infection, and trying to be the Dad I want to be too?? I say HATS OFF to you, my friend,” the 37-year-old father added, including a raised hands emoji.

“I don’t know how Moms/Artists like you exist,” Timberlake continued. “Go make up some fodder about somebody who’s just half-assin’ it. NOT a real one. Wishing your full health and speedy recovery, Pink! Shine on, sis!!!! – JT”

Pink/Instagram

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“@justintimberlake thanks friend. I’ve always respected your work ethic and talent and feel like I have learned from the best,” she wrote. “You gave me a chance when I was 19 with one song under my belt. ⅞ years later, you gave me another shot to prove my self as a solo artist in America.”

Continuing, she added: “You’re a genuine artist, talented from the bottom of your toes and you can’t even help it. Thanks for the vote of confidence. It’s been a privilege to know you, sir. Congrats on your beautiful family and on the legacy you leave and continue to build. I’ll open for you anytime.”

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In her original note, Pink, who has been traveling on the tour with husbandCarey Hartas well as their kidsJameson Moon, 18 months, and Willow Sage, 7, promised that she would be back on stage Saturday night at Sydney’s Qudos Bank Arena — “whether I’m better or not” — before adding that “the postponed show will be rescheduled.”

“As I said, I’m sorry to the real fans who this situation has affected,” Pink said, referencing her original apology. “Onwards and upwards.”

RELATED VIDEO: Pink’s Advice for Raising Strong Kids: ‘I’m a Truth-Teller’

Earlier this year, Pink spoke about the stresses that come with touring with your kids.

“Going on tour with children is really tricky. It’s exhausting. It’s the hardest thing I’ve ever done,” Pink revealed in July, in an episode ofReese Witherspoon‘s new AT&T seriesShine on with Reese(available now on demand).

“But I’m very, very fortunate that I get to bring my kids with me and that I kind of get to integrate them into my [work] life,” she admitted.

source: people.com