Up until last year, the 25-year-old allegedly met with wealthy men around the world including lawyers, bankers and sheikhs who showered her with gifts.
Under the name Kelly, Maria worked for the exclusive agency Carltons of London from 2009, according The Sun.
But last night she insisted she did not sex with any of her clients.
Her spokesman Max Clifford told the paper: ‘She signed up to a company which she believed were asking her to carry out promotional work.
‘When the true nature of the work became clear to her she left immediately.’
Maria had a profile on the agency’s website (Carlton’s of London) which only its most valued clients could access.
It read: ‘If you are looking for perfection, perfect body, youthful energy, stunning looks, Kelly is a sweet young lady who will breathe new passion into your life.
‘Wherever she goes, heads turn. She can adapt to any high-class environment.
‘The perfect package, Kelly is the perfect companion and provides very discreet, sensual and professional escort service.”
The site also said that Maria paired overnight with another escort called Tamara and clients would be ‘taken to heights of pleasure that words simply cannot explain’.
Last month the glamour model denied having worked as a lap dancer under the name ‘Brooke Silvers’ when she first moved to London from her home in Derby.
The claims were revealed by her former big spending ‘sugar daddy’.
A source told The People: ‘Maria openly told producers about her past. It is something she felt they should be aware of but that it was nothing to be ashamed of.’
According to friends, Maria met a married man who gave her many expensive gifts in exchange for companionship.
She used to brag to friends about the expensive meals and the designer shoes and matching handbags that he would buy her, the newspaper reported.
It is also claimed that the ‘sugar daddy’ was responsible for paying some of the £5,000 towards Maria’s boob job in 2009, which enhanced her from 34B to 34D.
Maria is currently dating club owner Mick Norcross, 48, her co-star on the ITV2 show.
She was spotting kissing him during a romantic dinner date recently and viewers saw the couple sharing fish and chips near the beach in Wednesday night’s episode.
But last week she was spotted jumping into a taxi with Norwich footballer Lee Croft after they left Essex nightclub Sugar Hut hand in hand.
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