He may be less than a month old, but Gordon Ramsay‘s newborn son, Oscar, is already quite the little star in his family — he was even rooting for his brother, Jack, before his big London marathon.

“Wishing my best mate @_jackrams3y_ the best of luck tomorrow running the #londonmarathon!” the TV chef, 52, captioned an Instagram photo showing his eldest son smiling while holding his baby brother in one arm.

“I’m so proud that it’s his second time at only 19!!! With @oscarjramsay as your newest supporter I know you got this! And help Jack raise funds for @greatormondst by donating in the link in my bio Gx,” the Hell’s Kitchen star added. Take a look at the adorable snap below!

People were of course loving the cute pic and took to the comments section. “Omg how does Gordon Ramsay’s newborn already look like his double?” one fan reacted. “That is just the sweetest photo,” another person commented.

Gordon and his wife, Tana, welcomed their fifth child into the world on April 4. “After 3 BAFTAs and one Emmy … finally, we have won an Oscar,” the proud papa jokingly captioned some pics of the couple and the newborn.

“Please welcome Oscar James Ramsay, who touched down at 12:58 today for some lunch! Xxx,” he gushed.

Ever since the newest member of the Ramsay family was born, Gordon has had no problem showing him off — the newborn even has his own Instagram that is currently being followed by over 55K fans. Recently, the restaurateur shared a photo of his young son being cradled by his mom, 44.

“Mummy took me to the beach for the first time today!! I loved it” the caption reads alongside a picture of baby Oscar napping on his mother.

It is so great to see Oscar surrounded by so many people that love him!