IT'S been 20 years since Sex and the City graced the silver screen for the first time and revolutionised modern TV.

But the show's writers have revealed they have a big regret from the series.

In season 2 episode eight, released in 1999, now US President Donald Trump made a cameo appearance where he and the show's siren Samantha Jones (Kim Cattrall) exchange flirty glances.

A plug for his Trump Tower building was also included in the script.

The writer's at the time were blissfully unaware the celebrity businessman would go on to become leader of the free world and be at the centre of a number of controversies.

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"If we could do it over again the main thing we would chose is not to involve Donald Trump," the writers told American author Jennifer Keishin Armstrong, whose new book Sex and the City and Us examines the show's impact and staying power.

SATC, which debuted on June 6 1998, was based on real-life writer Candace Bushnell's column for the New York Observer, and followed four female friends, including sex columnist Carrie Bradshaw, played by Sarah Jessica Parker, as they navigated New York City's dating scene.

The provocative series, which ended in 2004 after six seasons and two movies, caused scrutiny when it first hit screens due to its taboo topics, specifically when it came to sexual liberation.

It not only ignited a shift from male dominated shows to stories featuring independent women, but launched the careers of it's four main stars who played best friends.

Sadly for fans, the reality behind the scenes was not as friendly, with rumours Sarah Jessica Parker and Kim Cattrall never got along due to jealousy, before they finally had a public falling out last year.

Cattrall recently slammed Parker after the actress sent her best wishes following Cattrall's brother's death.

Posting a message to her Instagram, she wrote: "I don't need your love or support at this tragic time @sarahjessicaparker."

Leaving a lengthy caption, she continued to blast the actress.

She wrote: "My Mom asked me today 'When will that @sarahjessicaparker, that hypocrite, leave you alone?'

"Your continuous reaching out is a painful reminder of how cruel you really were then and now.

"Let me make this VERY clear. (If I haven't already) You are not my family. You are not my friend."

SATC STARS: THEN AND NOW

SARAH JESSICA PARKER

The show's voice and the most famous name to emerge from SATC, Sarah Jessica Parker played the glamorous sex and fashion columnist Carrie Bradshaw. The 53-year-old just finished filming the second season of the popular HBO series Divorce. She has done a string of movies over the years and has become a fashion icon at red carpet events and launched her own line of shoes, SJP.

CYNTHIA NIXON

Cynthia Nixon played Miranda Hobbes, a lawyer who unexpectedly becomes a mother and moves to Brooklyn from Manhattan. The 52-year-old went on to win two Tony Awards and a Grammy for projects post SATC. She did a complete career shift and announced in March she would be running for Governor of New York.

KIM CATTRALL

Slightly older than her three friends, Samantha Jones (played by Kim Cattrall) was arguably the fan favourite character, which was said to have caused a divide between her and Sarah Jessica Parker. The 61-year-old, who was already a bona fide movie star, played the sexually liberated PR expert with no filter. Cattrall has appeared in several TV series', including Sensitive Skin and Modus, and a number of theatre and Broadway shows.

KRISTIN DAVIS

The good girl of the four friends, Kristin Davis played Charlotte York, the hopeless romantic desperate for a family. Davis, 53, has been in several films and TV series'. She is heavily involved in charity work and was honoured by the Humane Society for her work African elephants.