Michael Strahan celebrated his son's birthday on Monday and paid tribute to Michael Jr. with a heartfelt message. 

The Good Morning America host took to social media to share a selection of family photos and the father-son resemblance was uncanny. 

MORE: Michael Strahan shares powerful message asking fans for support 

"Happy birthday to my son, @mstrayjr," he wrote. "Wishing you the most amazing day!! You are an amazing son, friend, brother, and a great human being. So proud of you."

WATCH: Michael Strahan's family life revealed 

Michael and Michael Jr. were beaming in the photos and showing off their matching, bright smiles. 

While the former NFL player is significantly taller than his son, they both displayed their athletic physiques too.

MORE: Michael Strahan's on-air joke leaves Robin Roberts speechless

MORE: George Stephanopoulos' wife Ali Wentworth shares hilarious update on family break

Fans commented on the photos and wrote: "I thought you only had the 2 girls! Good looking son happy birthday to him," and, "Happy Birthday to your handsome son, your mini me, wishing him all the best now and beyond the years to come".

Michael wished his son a happy birthday with some fun family photos 

Michael shares Michael Jr. and daughter Tanita with his first wife Wanda Hutchins, who he was married to between 1992 and 1996.

The TV personality went on to welcome two more children, twin daughters Isabella and Sophia, from his seven year marriage to Jean Muggli.

MORE: Michael Strahan's photo with teenage daughters left fans wondering the same thing

SEE: Michael Strahan reveals jaw-dropping underground man cave at NYC home

Michael is also a loving stepfather to son Dorian, who is Wanda's oldest child.

Michael has four children 

While Michael Jr. and Tanita live away from home, Isabella and Sophia split their time between their parents' homes in New York.

He previously opened up about fatherhood during an interview with People. He said: "My kids give me strength. I love being with the kids. To me, it's all about family, now more than anything."

Michael also gave an insight into raising his children and co-parenting with their moms.

He said: "I think a lot of times when you split, people assume that the mother is supposed to take responsibility for the kids. But from day one, it was very important for me to be active, to be a part of their life."

His oldest children lived in Germany during their childhood, and Michael added: "I was constantly on planes and phones. And it's very hard – of course it's hard with them being in Germany. But one thing I learned is, you make time for what you want to make time for."

Read more HELLO! US stories here 

Like this story? Sign up to our HELLO! Mail newsletter to get other stories like this delivered straight to your inbox.

ncG1vNJzZmivp6x7qbHLpaammZeWx6q6xGeaqKVfnbKiuNOhmKeckpqutsDYaKSorJiav26tzZ1km5mSrnxzfJFrZ3JpY2aCcYWScWamoZOdrqa4jKyrq5mYlrtus8yaZKuZopp6sbTOraZmpJ%2BkuKK4yKScZqufo3qnrcyio7Jllpa7tHnRnpicrF8%3D