Gwen Stefani & Gavin Rossdale's Son Kingston is All Grown Up on His 15th Birthday!

Gwen Stefani and Gavin Rossdale are celebrating their son Kingston’s birthday!

On Wednesday (May 26), the former couple both took to social media to share rare photos of their eldest son in honor of his 15th birthday.

Click inside to see their posts!

“happy 15th b day to my beautiful boy @kingsrossdale_ love u mom gx,” Gwen wrote on Instagram along with a photo of Kingston sporting long hair while strumming a guitar.

Gavin also took to his Instagram to wish Kingston a happy birthday.

“HAPPY BIRTHDAY KING – 15 years of life’s best journey – you are my best focus and inspiration-you are smart funny and kind with oceans of empathy-to me that’s all you need to make your mark -i could not be more proud of you – and i love you more every day -i am in awe of you -shine on 🖤-and yes i feel a lovely responsibility (huge)with your development -shout out to all my the single parents who are love joy and survival 🖤 – my sweet boy —@kingsrossdale_” Gavin wrote along with a photo of Kingston looking at a sunset.

Gwen and Gavin were married from 2002 until 2016. Together they share three sons – Kingston, Zuma, 12, and Apollo, 7.