Not surprisingly, the son of Gavin Rossdale and Gwen Stefani is growing up to be a handsome young man.

That was evident when the Bush frontman shared a series of photos of the exes’ son, Kingston Rossdale, on Instagram in celebration of his 15th birthday.

RELATED: Gavin Rossdale And Son Kingston Look Identical In New Photo

“HAPPY BIRTHDAY KING – 15 years of life’s best journey,” Rossdale began the first of three posts.

In a followup, he wrote, “moments as foundations of life and love 🖤” to accompany a video montage of photos taken throughout his son’s life.

In one more showing his son in profile, looking like the spitting image of his old man, Rossdale wrote, “on your marks get set. life. 🖤.”

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