Awkward.com! Stephanie Pratt joins the cast of Made in Chelsea...and immediately bumps into Spencer Matthews' ex-girlfriend

Stephanie Pratt has joined the cast of Made in Chelsea – and her introduction to the popular show got off to a potentially awkward start on Thursday when she filmed forthcoming scenes in west London.

The reality TV star has been confirmed as the latest newcomer to MIC after developing a romance with show regular Spencer Matthews, but the pair were not alone when the cameras started rolling on Sloane Street in Knightsbridge.

Indeed, the new couple’s very public display of affection was interrupted by the arrival of an all too familiar face – Spencer’s ex-girlfriend Louise Thompson. 

Louise gets a friendly hug from former boyfriend Spencer Matthews as his current girlfriend Stephanie Pratt looks on

Come here you: Louise gets a friendly hug from former boyfriend Spencer Matthews as his current girlfriend Stephanie Pratt looks on

Stephanie Pratt looks on as Spencer Matthews gives old flame Louise a warm hug while they were filming in Sloane Street

This could be awkward: Stephanie Pratt looks on as Spencer Matthews gives old flame Louise a warm hug while they were filming in Sloane Street

The former couple parted ways in acrimonious fashion earlier this year, with Louise going onto date Andy Jordan while womanizing Spencer quickly developed another doomed relationship with co-star Lucy Watson.

Given the history, Thursday’s ménage-a-trois had the potential to be difficult for all concerned when Louise bumped into Spencer and his current girlfriend, best known for her regular appearances in now defunct MTV show The Hills.

But if there was any animosity it didn’t appear to show as they greeted each other with a warm embrace while Stephanie looked on with a tight smile.

But the presence of US star Stephanie Pratt forms an uneasy Menage-a-trois on the set of Made in Chelsea

Old friends: But the presence of US star Stephanie Pratt forms an uneasy Menage-a-trois on the set of Made in Chelsea

Something has caught Stephanie Pratt's interest on the streets of London during a day of filming for the hit E4 show

My agent went that way: Something has caught Stephanie Pratt's interest on the streets of London during a day of filming for the hit E4 show

Spencer Matthews has a stretch behind his ex-girlfriend as filming ends in Knightsbridge, west London

He's behind you: Spencer Matthews has a stretch behind his ex-girlfriend as filming ends in Knightsbridge, west London

  

Dressed in cropped denim shorts and a black sweater, Stephanie cut a stylish figure as she kept her eyes trained on Louise and her new man, who seemed delighted to meet his ex.

The American reality TV veteran’s introduction to the exclusive west London set  has already ruffled feathers amongst the show’s cast – not least Lucy, who recently dismissed their budding relationship as fake.

‘They’re obviously quite fame hungry and desperate for attention,’ she told New! magazine, adding: ‘Normally I cut exes out of my life so I don’t know what they’re up to, but with Spencer it’s difficult because he’s trying to be pictured as much as possible with Stephanie.'

The trio looked relaxed as the cameras stop rolling on Thursday

That's a wrap: The trio looked relaxed as the cameras stop rolling on Thursday

Spencer Matthews and Stephanie Pratt locks cheeks between takes on the set of Made in Chelsea

A miss on the lips: Spencer Matthews and Stephanie Pratt locks cheeks between takes on the set of Made in Chelsea

The couple appear to be smitten as they frolic on the streets of London

Are you for real: The couple appear to be smitten as they frolic on the streets of London

The couple started dating in June, with Spencer quick to shoot down skeptical rumours that their romance is a publicity stunt.

‘It’s real. We’re romancing,’ he told Now! magazine. ‘She gets me 100 per cent. I really like her but obviously it’s very difficult because she lives in LA.’

Contact shouldn’t be too much of a problem now Stephanie is part of the show, but the pair seemed to miss each others lips whenever they indulged in another PDA between takes for the sixth series. 

Spencer and Stephanie relax between takes

Very much together: Spencer and Stephanie relax between takes

The new couple started dating in June

Just the two of us: The new couple started dating in June

The pair appear to grapple with one another as filming comes to an end for another day

Tug of love: The pair appear to grapple with one another as filming comes to an end for another day

Spencer’s relationship with Louise imploded in spectacular fashion, with the notorious lothario claiming it was her fault that he repeatedly cheated on her with other women.

‘It’s f***ing hard to respect you when you allow me to cheat on you,’ he wailed at the time, shortly before yelling: ‘I’m not in love with you, Louise!’

Made in Chelsea series six is expected to air on E4 later this year. 

Spencer Matthews gets a gentler back-rub from new girlfriend Stephanie Pratt

I've got your back: Spencer Matthews gets a gentler back-rub from new girlfriend Stephanie Pratt

Spencer Matthews pulls a funny face outside a nearby Christian Dior store following his meeting with ex-girlfriend Louise Thompson

Making a Pratt of himself: Spencer Matthews pulls a funny face outside a nearby Christian Dior store following his meeting with ex-girlfriend Louise Thompson

Louise heads off after meeting ex-boyfriend Spencer Matthews and new girlfriend Stephanie Pratt on the streets of west London

I'm orf: Louise heads off after meeting ex-boyfriend Spencer Matthews and new girlfriend Stephanie Pratt on the streets of west London