Gwyneth Paltrow Celebrates Son Moses' 17th Birthday With Rare Photo

Her caption is a real tearjerker.

Gwyneth Paltrow honored her son on his birthday with the sweetest message.

The Iron Man actress, 50, took to Instagram to share a photo of herself with her youngest child, Moses Martin, on his 17^th birthday.

The snap captured a makeup-free Paltrow posing for the very casual selfie alongside her son while the two appeared to be on a boat having a day out on the sea.

Paltrow tends to keep her kids out of the spotlight but occasionally will share a rare glimpse into her children's lives, and this was one of those moments.

"Happy 17th birthday to the boy that fills my soul up every time I look at him," the actress wrote in the caption.

"@mosesmartin you are the most exceptional, kind, loving human being. You keep us all laughing with your perfect impressions and you inspire us with your harmonies. I deeply adore you more than you could ever imagine! Love, mama."

Many celebrity friends and fans took to the comments to wish the Goop founder's son a happy birthday, including model Karlie Kloss who wrote, "😍😍 HBD Moses!!! ❤️."

Rob Lowe's son Johnny also wrote, "Moses!!!! Legend. Happy birthday buddy."

Actress Sasha Alexander best known for her role as Gretchen Witter in Dawson's Creek, chimed in, writing, "Happy Birthday to your beautiful, kind boy!! ❤️❤️❤️."

"He looks just like his father. Happy Birthday Moses. 🎉🥳," one fan wrote, referring to Paltrow's ex-husband and the lead singer of Coldplay, Chris Martin.

Along with Moses, Paltrow and Martin also share a daughter, Apple Martin, 18.

Paltrow and Martin tied the knot in 2003 but ultimately called it quits in 2016. Two years later, the actress married her husband, writer and producer Brad Falchuk.

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