SHE’S the busty Hollywood pin-up who’s best known for her critically-acclaimed roles in The White Lotus and Euphoria.

But the star has completely transformed her look for her latest role in gritty new biopic Black Bear.

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Sydney Sweeney, 27, is unrecognisable in shots taken on the set of the film, which tells the story of 90s superstar boxer Christy Salters-Martin.

Sydney swapped her long blonde hair for a shorter dark style that was held back from her face by a bandana.

Her favoured glamorous low-cut dresses were replaced by low-key T-shirt and zip-up hoody combinations.

Ben Foster was also snapped on set in his role as Jim Martin, Christy’s abusive husband and trainer.

Christy took the boxing world by storm in the 90s, winning the WBC title and appearing on the cover of Sports Illustrated – the first female boxer to do so.

She was nicknamed The Coal Miner’s Daughter after her father’s job and became controversial promoter Don King’s first female client when she joined his stable in 1993. 

Christy fought on the undercard of Mike Tyson‘s heavyweight world title clash with Brit fighter Frank Bruno and put on a masterclass that many say outshone the main event.

Tyson said in a new Netflix documentary: “I believe I was in jail and they were talking about “Coal Miner’s Daughter”, she’s knocking out people, she’s really exciting.

“I’m like, ‘Get the f*** out of here.’ But then I started going to some of her fights.

“She throws a lot of hard punches, crowd-pleasing. She gave everybody their money‘s worth. So I said, ‘Put Christy Martin on my undercard’.”

The pinnacle of her 59-fight career came in 2009 when she beat Dakota Stone for the WBC female super welterweight title.

However, she made headlines for devastating reasons the following year when she was stabbed several times, shot in the chest and left for dead by her husband after a row at their Florida home.

The ugly incident unfolded after Christy told Jim she wanted a divorce from their toxic relationship and was seeing her high school girlfriend Sherry Lusk.

Christy said: “He stopped everything and just left me laying there… I could hear my lung gurgling. So I know it’s filling up with blood.

“He’s walking in and out of the room to see if I had to died yet. I’m begging him, ‘Please don’t let me die. I’m sorry Jim, I made a mistake. Truth is, I love you.’

“But then by the time I realised he can’t let me live I was like, ‘Oh, f*** you. I never loved you. You’ve been a piece of s*** the whole time. I’m your personal ATM, you’ve done nothing but use me’.”

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Jim did eventually walk back towards Christy – only to fire a shot into her torso.

Christy remembered: “He stands at my feet with my own pink 9mm.

“I told him, ‘You don’t have the balls to shoot me.’ And he shot me.

“My mind’s like, ‘No, I don’t wanna die. I have to get out. I have to save me. Some way, I have to save me’.”

The writing had been on the wall for their relationship for a long time.

KNOCKOUT BLOW

As Christy’s career reached its height in the early 2000s – her private life was the opposite.

She wanted to bring in a new trainer – but Jim would not tolerate the thought – and made it known during a sparring session.

Christy said: “He knocked me out. I’d never been knocked out. I’d never been dropped even.

“You know when you’re hitting someone in the right spot. You know when you’re hitting someone hard enough to knock them out.

“He knew exactly what he was doing. Is it abuse? Yeah, he’s smart. He disguised it.

“All I wanted to do was leave him, all I wanted to do was live my life freely.”

Jim Martin would later be sentenced to 25 years in prison for attempted murder.

The vicious attack left Christy with severe PTSD. Amazingly, she returned to the ring in 2011 when she lost a rematch with Stone.

She fought for a final time in 2012, ending her sporting career with a defeat to Mia St John.

Since then, she has found love again with former boxing foe Lisa Holewyne, whom she beat by unanimous decision in 2001.