By Donna Mcconnell and Sarah Fitzmaurice Last updated at 4:04 PM on 3rd November 2011 Mariah Yeater has claimed Justin Bieber had told her it was his first time when they had a seedy liaison backstage at one of his concerts. Yeater, 20, who alleges that Bieber is the father of her baby, said the 17-year-old singer had told her he was a virgin before hastily removing her clothes in a bathroom. Californian Yeater also claims that her sexual encounter with Bieber was 'brief, lasting only approximately 30 seconds'. Here is the first photo of the Californian woman who has alleged was secretly fathered by the pop world's biggest teen idol, Justin Bieber
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She claims they had sex backstage after his performance in L.A. on Oct 25
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She is demanding a paternity test and 'adequate support'
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Pop star's spokesperson vehemently denies the allegations
Saucy: In another shot, @placeholder shows off her figure and her tattoos by lifting up her top and displaying her stomach