Zac Efron references his shocking real-life jaw injury in his new rom-com A Family Affair.

The American actor, 36, has returned to screens as the male lead in the Netflix flick, with Nicole Kidman playing his love interest.

He stars as fictional shallow and vain movie star Chris Cole, while Nicole plays writer Brook Harwood, the mother of his long-suffering assistant Zara (Joey King).

One scene sees romance beginning to blossom between Chris and Brook as they get cosy on a couch and share stories about their injuries from over the years.

Chris tells Brook how he had surgery on his chin after a fall -  a direct reference to Zac's real-life jaw injury.

Chris says: 'I did have surgery though. I fell on set, some broken glass,' before lifting up his head to show Brooke the scar on the bottom of his chin.

The story bears a close resemblance to Zac's real-life accident, which saw him shatter his jaw after smashing his chin on a fountain when he slipped at home.

Viewers also took to X - formerly known as Twitter - to remark on Zac's changed look in the movie, after the nasty accident left him with a fuller and more square jawline.

Zac Efron references his shocking real-life jaw injury in his new rom-com A Family Affair (left in 2007 and right in the movie)
Zac Efron references his shocking real-life jaw injury in his new rom-com A Family Affair (left in 2007 and right in the movie)

Zac Efron references his shocking real-life jaw injury in his new rom-com A Family Affair (left in 2007 and right in the movie) 

With many unaware of the reason behind his changed appearance, one questioned: 'What happened to Zac Efron's face? Did he get a bunch of filler?'

Another said: 'Watching A Family Affair. What happened to Zac Efron's face?' 

A third commented: 'Zac Efron's face just look so stiff tho but he's still cute,' and a fourth penned: 'Why does Zac Efron's face look different? Did something happen?'

Another added: 'I just started A Family Affair on Netflix and you guys what happened to Zac Efron's face? Surgery? Or make up for the movie?'

In 2022, Zac detailed the terrifying accident which saw him shatter his jaw after he was hit by plastic surgery rumours.

In 2022, Zac detailed the shocking accident which saw him shatter his jaw after he was hit by plastic surgery rumours because of his more prominent square chin (pictured in 2019)
Zac explained how the masseter muscles on the inside of his face and jaw 'compensated' for his injury and grew in size, leading to his changed jaw shape (pictured in A Family Affair)

In 2022, Zac detailed the accident which saw him shatter his jaw after he was hit by plastic surgery rumours because of his more prominent chin (left in 2019 and right in the movie)

Zac told Men's Health Magazine he slipped in a puddle of water while running in socks at his home and smashed his chin into a granite fountain.

He recalled how he lost consciousness and woke up to find his chin bone was 'hanging off his face' after the nasty accident in 2013.

Zac explained how the masseter muscles on the inside of his face and jaw 'compensated' for his injury and grew in size, leading to his changed jaw shape.

'The masseters just grew. They just got really, really big,' he shared of the shocking accident. 

Zac later told Entertainment Tonight that he nearly died after the freak injury, explaining: 'It was funny. It sucks. I almost died, but we're good.' 

Zac stars alongside Nicole Kidman and Joey King in A Family Affair, and viewers have remaked on his changed appearance after the shocking injury

Zac stars alongside Nicole Kidman and Joey King in A Family Affair, and viewers have remaked on his changed appearance after the shocking injury 

The High School Musical star claimed he didn't know his transformation had gone viral on social media until his mother told him about the plastic surgery rumours.

'My mom told me. I never really read the internet, so, I don't really care,' he admitted.

At the time, Zac's friend Kyle Sandilands also shut down rumours that the Baywatch star had undergone plastic surgery.

'I would know if he'd had any plastic surgery,' Australian radio host Kyle declared at the time on The Kyle And Jackie O Show.