In the photos published by Us Weekly, the former Hills stars cuddle up to their newborn who was welcomed on October 1.
Montag, 31, and Pratt, 34, who had US$27,000 worth of crystals in the delivery suite, also shared new details about Gunner's birth.
Their 6-pound baby boy was delivered after a five hour labour and no drugs.
“I actually heard [a doctor] refer to him as a superbaby,” Pratt told Us Weekly.
And although Pratt was in and out of the delivery room, but his wife said that he was fully supportive by the end.
“He was like an Olympic coach telling me, ‘You’ve been praying for Gunner all your life. Here is he comes. Push him out!”
Congratulations to the new parents!