Joey Essex had Mark Wright and fans doing a double-take over his throwback snap of his lookalike dad.
The former TOWIE star, 30, dedicated his latest Instagram post to dad Donny, who looked identical to his reality star son in the snap, to mark Father's Day.
Joey posted an old black-and-white snap of Donny in a boxing ring, praising his father for raising him and being a huge inspiration in his life.
Joey wrote: "I wouldn't be the man I was today without you Dad. Thanks for teaching me respect, manners and to be brave.
"Happy Father's Day to all the best dads out there and all the mums being dad."
But Mark and plenty of Joey's fans were left baffled as they pointed out the strong resemblance between the pair.
TV legend Mark commented: "How this isn't you is mad. Twins."
His comment prompted other people to join in, with one adding: "Was just going to say the same!"
"I thought it was him," another quipped.
"Wow that first pic could be you," a fourth shared.
Some else also agreed with Mark's comment, calling Joey and Donny "twins".
It appears the pair have always been close, as Joey posted another image alongside the first, and it looked like a recent one.
Joey still looks just like his dad, and he shares a close relationship with his father, as his mum tragically died when he was just 10-years-old.
In a new BBC documentary Joey Essex on Grief, viewers saw Joey talk openly for the first time about losing his mum when she took her own life, and the anxiety he still deals with on a day-to-day basis.
"Nothing seems to make me happy," he says in the one-off show, adding that he wants to start a family, "but I've got to sort myself out first".
If you're struggling and need to talk, the Samaritans operate a free helpline open 24/7 on 116 123. Alternatively, you can email jo@samaritans.org or visit their site to find your local branch
