'I didn't want to get hit with a belt': Dakota Johnson reveals she used a derriére double for S&M punishment scene in Fifty Shades

She was pretty much relatively unknown in Hollywood until it was announced that she would take on the role of Anastasia Steele in the screen adaptation of Fifty Shades Of Grey. 

But despite stripping down for most of her debut lead role, Dakota Johnson has revealed she used a derriére double when it came to getting spanked.

The 25-year-old actress told how she was not up for the S&M punishment scene with her co-star Jamie Dornan because she couldn't handle the pain.

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'I didn't want to get hit with a belt': Dakota Johnson revealed she used a bum double in Fifty Shades Of Grey

'I didn't want to get hit with a belt': Dakota Johnson revealed she used a bum double in Fifty Shades Of Grey

Unlike Assange or DSK, Grey at least warned Ana what he was going to do and required her written permission before he set about doing it

'That was not my bum': Dakota opted out of the raunchy scene in which Jamie Dornan had to whip her

The offender: Johnson didn't take part in the S&M punishment scene

The offender: Johnson didn't take part in the S&M punishment scene

According to the Daily Star, Dakota said: 'There was a close up of a bum getting hit with a belt.

'That was not my bum, because I didn't want to get hit with a belt.' 

Speaking to Access Hollywood earlier this month, Dakota revealed that her favourite sex scene in the film is when her character Steele loses her virginity to Christian Grey. 

The Texas born actress said: 'The virginity scene I think is something that is so beautiful.

'And the way that [cinematographer] Seamus [McGarvey] and [director] Sam [Taylor-Johnson] shot that scene – it's really incredible.'

She added: 'And the colors! It's so saturated and then, just watching a really profound moment in a young girl's life. I think that was pretty special to do.'  

Stripping down: For most of the risqué motion picture Johnson is in the nude alongside Dornan

Stripping down: For most of the risqué motion picture Johnson is in the nude alongside Dornan

 In Fifty Shades of Grey, Christian Grey makes blushing virgin Anastasia Steele sign a long detailed contract

Confident: The Texas born beauty explores the world of BDSM in the new film by Sam Taylor-Johnson

Breakout role: Johnson takes on the lead of Anastasia Steele in the film adaptation of the popular book

Breakout role: Johnson takes on the lead of Anastasia Steele in the film adaptation of the popular book

On Thursday evening Dakota was the toast of the town as she walked the red carpet in London's Leicester Square.

But Johnson quickly went from angelic to biker chic by adding a studded leather jacket to her white, plunging gown for the Fifty Shades Of Grey film premiere afterparty.

The brunette actress looked every inch the rock goddess in her edgy look as she headed back to her hotel after living it up at Aqua. 

Biker chic: Johnson edged up her ladylike look with a studded leather jacket as she left the Fifty Shades Of Grey film premiere after-party at Aqua in London on Thursday night

Biker chic: Johnson edged up her ladylike look with a studded leather jacket as she left the Fifty Shades Of Grey film premiere after-party at Aqua in London on Thursday night

Ladylike: The 25-year-old beauty ensured she exited the car in a demure fashion
Ladylike: The 25-year-old beauty ensured she exited the car in a demure fashion

Ladylike: The 25-year-old beauty ensured she exited the car in a demure fashion

Flying solo: There was no sign of Dakota's hunky co-star Jamie Dornan at the afterparty

Flying solo: There was no sign of Dakota's hunky co-star Jamie Dornan at the afterparty

Keeping it simple: The rising star accessorised with silver sandals, a two-tone clutch and a pearl ring

Keeping it simple: The rising star accessorised with silver sandals, a two-tone clutch and a pearl ring

Dakota went bra-less in her silver-edged dress, which was cut almost down to her navel.

She paired the flowing gown with silver sandals and a pearl cocktail ring.

The star, who plays inexperienced student Anastasia 'Ana' Steele in the racy Sam Taylor-Johnson film, looked worlds apart from her naive alter-ego in her sexy outfit.

Rave reviews: While critics have been divided about the film, they have been impressed with Dakota's acting

Rave reviews: While critics have been divided about the film, they have been impressed with Dakota's acting

Role of a lifetime: Landing the female lead in the Sam Taylor-Johnson directed film has changed the star's life

Role of a lifetime: Landing the female lead in the Sam Taylor-Johnson directed film has changed the star's life

Dakota toughened up her look with a slick of burgundy lipstick, a liberal amount of bronzer, and wore her hair down straight.

The beauty, who is the daughter of actress Melanie Griffith, had managed to fly largely under the radar until landing the high-publicity role.

And as her profile is set to skyrocket with the release of the film on Friday 13 February, which also stars hunky Jamie Dornan, Dakota is worried her new-found fame might affect her lifestyle.

Naive: She plays innocent  Anastasia 'Ana' Steele, who falls for S&M-crazed buisnessman Christian Grey

Naive: She plays innocent Anastasia 'Ana' Steele, who falls for S&M-crazed buisnessman Christian Grey

Partying the night away: Dakota was celebrating the release of the film with a big night out in London
Partying the night away: Dakota was celebrating the release of the film with a big night out in London

Partying the night away: Dakota was celebrating the release of the film with a big night out in London

'I think about my dwindling anonymity,' she explained in an interview with VOGUE magazine.

'And that’s really scary because a very large part of me would be perfectly happy living on a ranch in Colorado and having babies and chickens and horses - which I will do anyway.'

However, she felt she couldn't miss the opportunity to take part in the big screen adaptation of E.L. James' bestselling novel.

She explained: 'I wanted to be involved because it’s so different and it’s an intense love story.'

Runs in the family: Her mother is Working Girl actress Melanie Griffith 

Runs in the family: Her mother is Working Girl actress Melanie Griffith 

Little miss popular: Fans were clamoring for an autograph from the actress

Little miss popular: Fans were clamoring for an autograph from the actress

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