The black and white shot saw the new parents adoring their newborn as he laid in their arms with his eyes shut and pulling a cute face.
Aston shared the photo with the caption: “My little family, thank you so much @sweet_bambini_ for shooting Grayson on his first photoshoot!!! Can’t wait to see the rest!!”
Many of his fans flocked to his social media page to comment on the loving picture.
One user wrote: “Gorgeous Photo,” while another penned: “Beautiful family photo, something to treasure forever.”
The former JLS star also uploaded a cute picture of him cradling his son shortly afterwards.
Aston held his baby’s back to the camera to show off his personalised baby grow, which read: “Happy 30th Birthday Daddy. All of my love Grayson.”
He captioned it: “The greatest birthday gift EVER!!!”
The proud father also treated his followers to a heart-melting clip of his first born.
The singer was making pancakes for himself and his fiancée, and zoomed in to his son’s face to jokingly claim that he looked jealous.
He quipped: “That moment when your son watches you make pancakes and he’s thinking, ’I want pancakes too, where’s my pancakes?’”
Aston has posted a series of cute uploads of Grayson since he was born last month.