But that's not the only part of his future that Gunner's parents have already decided on.
The first upload on, ahem, Gunner's Instagram page is of the magazine cover that Heidi and Spencer posed for on Us Weekly. Both Montag and Pratt posted a photo of the cover on their Instagram accounts Wednesday.
Alongside his post, Gunner captioned the pic, "my first cover", so he's clearly a man of few words.
During their interview, the former Hills stars told the magazine how they're incredibly proud of their son's name.
"He'll probably be a pitcher, so when Gunner steps to the mound, he's going to be gunning those throws down home plate", Pratt exclusively reveals in the new issue of Us Weekly, in which the parents also share photos of their newborn.
"Gunner has been on my top names since before Spencer even agreed to have kids", Montag, 31, explained. "We went back and forth, but it just seemed like the best fit". "It just applies to a lot of sports".
The newborn weighed 6 lbs, 12 oz. and 19 in. long.
"We are so blessed to have a lovely healthy baby boy", Montag told Us Weekly earlier this month, adding, "It was the hardest and most rewarding experience". The reality is sinking in that we are going to have a child! "She has planned for and thought about this".
Congrats again to the happy couple on the arrival of their son!