Iggy Azalea performs "Black Widow" during the 2014 MTV Video Music Awards in Inglewood, California August 24, 2014. REUTERS/Lucy Nicholson
Iggy Azalea performs "Black Widow" during the 2014 MTV Video Music Awards in Inglewood, California August 24, 2014. REUTERS/Lucy Nicholson REUTERS

Iggy Azalea has sparked breast enhancement rumours. The singer is said to have undergone a "secret" surgery to enhance her bust size.

OK magazine reports that Iggy underwent the transformation before her AMA performance and now her breast size is full B-cup. "Iggy has always wanted bigger boobs and there's something about J.Lo that makes you second-guess your body" a source revealed to the magazine about the singer's decision to allegedly increase her breast size.

Furthermore, the report also suggests that the 24-year-old has not only plumped her breasts, but has also augmented her derriere. Though there is no confirmation to these rumours, there has been many times when the singer has become subject to plastic surgery speculations.

Meanwhile, Iggy recently made an appearance at KIIS FM Jingle Bell Ball. She channelled a black figure-hugging dress. According to Daily Mail, the dress accentuated the singer's curves. Her rounded derriere clearly drew a lot attention. She coupled her sophisticated look with a gold necklace and monochrome chequered heels. She wore her golden tresses to the side and kept her make-up minimal.

The singer is making waves with her music and has been giving back-to-back stage performances. Her latest video "Fancy," featuring Charli XCX topped the YouTube videos in Australia. Her collaborative song "Problem," with Ariana Grande, has also made to the top 10 list.

"It probably is no surprise that not only have Azalea and Sia both been among the year's bestsellers and now most watched but they have earned multiple Grammy Award nominations ahead of next year's awards presentation," said The Age in its report.

Iggy rose to fame after the release of her controversial songs "P****" and "Two Times." Both her songs went viral on You Tube. Her debut studio album was "The New Classic." For this year's Grammy awards she has received four nominations including Best New Artist, Record of the Year, Best Pop Duo/Group Performance and Best Rap album.

She will also be making her film debut in "Fast & Furious 7." She will play a friend to Vin Diesel's character Dominic Toretto, according to Mirror.