Gwyneth Paltrow, the Hollywood actress, marked her son Mezos’s 17th birthday on April 9 by sharing a loving message and a photo of him aboard a yacht on her Instagram blog.

Gwyneth emphasized her love and appreciation for her son in the message, describing him as an extraordinary, compassionate, and caring individual who makes them laugh with his brilliant parodies and inspires them with his harmonies.

Mezos is Gwyneth’s son with Coldplay frontman Chris Martin, and the couple also has a daughter named Apple Blythe.

Gwyneth suffered from postpartum depression with the birth of her second child, and she and Chris divorced in 2014.