Welsh songstress Katherine Jenkins has rejected rumours that she has had a boob job to enhance her enviable bust line. The 28-year-old buxom singer has sparked ongoing speculation that her famous curves are the result of secret cosmetic surgery, but according to the starlet her ample breasts are all her own. In response to the rumours suggesting she has had a breast enlargement, Katherine openly stated: "I don't think that would be necessary. Do you?" An award-winning mezzo-soprano, Jenkins has already released four classical number one studio albums, selling more than four million copies. Her sixth album, entitled Sacred Arias, was launched earlier this month. Katherine recently signed a £5.8 million recording contract with US label Warner Music, but claims that she has no intentions of moving stateside. "I'm keeping my house here and I wouldn't want to make a big change like that at the moment," she told the Daily Mail.ADNFCR-1234-ID-18852810-ADNFCR