Photo: John Stamos Instagram

John Stamos Instagram

John Stamosis celebrating son Billy’s milestones!On Tuesday, theFuller Housestar, 59, shared a sweet mini-me moment with his 4-year-old son onInstagram.“One of us is starting his first day at school. And the other is doing everything in his power not to cry,” Stamos wrote alongside a photo of father and son wearing matching white, short-sleeved shirts.In the pic, Billy stands slightly behind his dad in khaki shorts with shaggy hair and a side-swept part.Stamos, who shares Billy with wife Caitlin McHugh Stamos, frequently posts about big events and everyday moments with his family.John Stamos/InstagramEarlier this week, the trio enjoyed the Spider-Man-themed “Glow Webs Glow” experience at the Santa Monica Pier.“Wonderful day at “Glow Webs Glow” event celebrating Season 2 of#SpideyandhisAmazingFriends,” Stamoscaptioneda carousel of shots on Instagram, showing the happy family. “I have the honor of playing one of his friends, Iron Man.@disneyjunior#marvel@disneyplus@caitlinskybound.“In June, the actor shared more low-key pictures of him and Billy justhanging out in the backyard.In the first shot, Stamos sits in a garden while holding Billy on his lap as the two of them laugh together. The dad of one also included a sweet picture kissing his son on the head as the preschooler is wrapped up in a towel.Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.“The little moments. The ‘micro-transactions’ that take place in between life’s big events. I like those the best,” Stamos captioned the thoughtful post.

John Stamosis celebrating son Billy’s milestones!

On Tuesday, theFuller Housestar, 59, shared a sweet mini-me moment with his 4-year-old son onInstagram.

“One of us is starting his first day at school. And the other is doing everything in his power not to cry,” Stamos wrote alongside a photo of father and son wearing matching white, short-sleeved shirts.

In the pic, Billy stands slightly behind his dad in khaki shorts with shaggy hair and a side-swept part.

Stamos, who shares Billy with wife Caitlin McHugh Stamos, frequently posts about big events and everyday moments with his family.

John Stamos/Instagram

John Stamos and his son Billy

Earlier this week, the trio enjoyed the Spider-Man-themed “Glow Webs Glow” experience at the Santa Monica Pier.

“Wonderful day at “Glow Webs Glow” event celebrating Season 2 of#SpideyandhisAmazingFriends,” Stamoscaptioneda carousel of shots on Instagram, showing the happy family. “I have the honor of playing one of his friends, Iron Man.@disneyjunior#marvel@disneyplus@caitlinskybound.”

In June, the actor shared more low-key pictures of him and Billy justhanging out in the backyard.

In the first shot, Stamos sits in a garden while holding Billy on his lap as the two of them laugh together. The dad of one also included a sweet picture kissing his son on the head as the preschooler is wrapped up in a towel.

Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.

“The little moments. The ‘micro-transactions’ that take place in between life’s big events. I like those the best,” Stamos captioned the thoughtful post.

source: people.com