Gwyneth Paltrow is Slabu Exchangecelebrating her son on his special day.

The Goop founder shared a touching birthday tribute for her son Moses in honor of him turning 17.

"Happy 17th birthday to the boy that fills my soul up every time I look at him," Gwyneth wrote on Instagram April 8. "@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."

Gwyneth paired the sweet words with a snap of herself and Moses, who she shares with ex-husband Chris Martin. The two are also parents to daughter Apple, 18.

Gwyneth last shared a pic of both kids on Instagram on New Year's Eve. When Moses turned 16 last year, the Seven actress wrote in her Instagram tribute to him, "With every thought, action and intuition you have, you make people feel seen, heard and valued. You are deeply special to all who know you."

Later that same year, Gwyneth exclusively shared how Moses takes to her health and wellness advice.

"He's 16 and he will barely let me give him a vitamin," she told E!'s Francesca Amiker at the time, "so it's also like, knowing when to relent and give him his space."

In terms of exercise, Gwyneth noted that she gets active with both of her children in different ways. While she and Apple have "done a lot of Tracy Anderson [Method] together over the years," Gwyneth shared that she and Moses enjoy spending time outdoors.

"Moses will take walks with me, so that's great," she said, "and he likes to skateboard too, so often times, we'll walk and he'll skate next to me and that's fun."

For the latest breaking news updates, click here to download the E! News App