Guess who? Hollywood superstar stuns fans with unrecognisable throwback pic as a teenager

The true Hollywood superstar left fans stunned with an unrecognizable throwback picture.

The A-lister took to Instagram on Thursday to post a picture in which he assumed he was ‘maybe 17’ and years away from his life as a megastar.

I was maybe 17 years old. I was an assistant to a football player. #throwbackthursday,’ the actor captioned a photo of him standing outside wearing a shirt, tie and blazer.

So can you guess who the pre-fame teenager is in the picture?

It’s none other than Wolverine himself, Hugh Jackman.

The true Hollywood superstar left fans stunned with the throwback picture.  So can you guess who he is?

The true Hollywood superstar left fans stunned with the throwback picture. So can you guess who he is?

The picture was posted on Jackman’s 55th birthday and left fans stunned at how much the actor has changed.

“I think if you showed me this picture and said ‘who is this’ without telling me directly, I would never guess it was Hugh Jackman,” one fan wrote in the comments.

Many others compared the action star to That ’70s Show actor Topher Grace.

Hugh Jackman enjoyed an early morning sunrise in Sydney following his divorce from wife of 27 years Deborah-Lee Furness.

The post comes after the Prisoners star shared the poignant moment on his Instagram earlier Thursday, revealing a picturesque sunrise in the Sydney‘s Bondi Beach.

The shot shows the surf lapping the shore as passers-by take in the iconic view of the South Pacific.

Hugh captioned the image: “Sunrise at Bondi. 5.20am.’

Jackman is said to be preparing to release a new tell-all memoir following his breakup.

It's none other than Wolverine himself, Hugh Jackman.  Taken in Saint Tropez in 2011

It’s none other than Wolverine himself, Hugh Jackman. Taken in Saint Tropez in 2011

The Hollywood star, 54, shared the poignant moment on her Instagram on Thursday, revealing a picturesque sunrise at Sydney's Bondi Beach.

The Hollywood star, 54, shared the poignant moment on her Instagram on Thursday, revealing a picturesque sunrise at Sydney’s Bondi Beach.

According to US WeeklyThe Australian actor is currently in the early stages of writing his bombshell book.

His new memoir will detail his life and “bombshell” revelations.

“Hugh decided to (write this book) now because he’s finally (been) honest with himself (and) the divorce,” the insider said.

“The content will be Hugh talking about his life.” He will open up about his life like never before.’

Hugh and Deborah-Lee shocked fans when they announced they divorced after 27 years of marriage last month.

“We have been blessed to be together for almost three decades in a wonderful and loving marriage.” Our journey is now moving and we have decided to separate in order to continue our individual growth,” the couple said in a statement obtained by PEOPLE.

Outing: Hugh was recently spotted on an outing in New York wearing a hat from Wreckham FC, the Welsh football team owned by his friend Ryan Reynolds

Outing: Hugh was recently spotted on an outing in New York wearing a hat from Wreckham FC, the Welsh football team owned by his friend Ryan Reynolds

Jackman is 'in the early stages of writing a new memoir' following his divorce

Jackman is ‘in the early stages of writing a new memoir’ following his divorce

His new memoir will detail his life and

His new memoir will detail his life and “bombshell” revelations

“Our family has been and always will be our highest priority.” We approach this next chapter with gratitude, love and kindness. We greatly appreciate your understanding in respecting our privacy as our family navigates this transition.’

The former couple signed the statement as ‘Deb and Hugh Jackman’, adding: ‘This is the only statement either of us will make.’

The Australian couple share two children together; Oskar, 23, and Ava, 18.

Last April, the couple celebrated their anniversary, and Jackman posted a glowing tribute to his wife on Instagram.

‘I love you Deb. Today is our 27th wedding anniversary. 27 years! I love you so much,” the actor wrote in his caption.

“Together we have created a beautiful family.” And life. Your laughter, your spirit, generosity, humor, sass, courage and loyalty are an incredible gift to me. I love you with all my heart,’ he shared in a heartfelt post.

Hugh and Deborah-Lee shocked fans when they announced their divorce last month after 27 years of marriage

Hugh and Deborah-Lee shocked fans when they announced their divorce last month after 27 years of marriage