Iggy Azalea's ascent into the rap pantheon is little short of miraculous. The 23-year-old has somehow become one of US hip-hop's most touted female rising stars, despite the considerable practical and geographical handicaps of being a white, middle-class rapper raised in an obscure New South Wales outpost named Mullumbimby.

She has done so by peddling a strain of Deep South hip-hop that is so hyper-sexualised and lyrically provocative that it verges on the cartoon. Azalea may frequently cite the late gangsta poet Tupac Shakur as her inspiration and touchstone, but musically and visually her peers are the lewd, lubricious ilk of Lil' Kim and Nicki Minaj.

Her sexually charged shtick is founded on the fact that she is a preposterously Amazonian figure, prowling the stage in cascading peroxide hair, knee-length boots, a micro-skirt and a bra top. Flanked by a DJ and four scantily clad backing dancers, she represents the exact pouting, gyrating and – yes – twerking point where hip-hop meets the lap-dance club.

Musically, her in-your-face, subtlety-free electropop serves as a means of delivery for forthright declarations of her own magnificence and peerless sexual ability. Bounce, one of her two top 20 singles to date, could be hip-hop as recalibrated by 1990s Europoppers 2 Unlimited; the brash, stuttering Pussy hymns the glories of her crotch, which she relates is "wetter than the Amazon" and therefore can "Hook 'em like crack".

Iggy Azalea's approach is shock tactics set to a tumescent four-to-the-floor beat – she is an archly pornographic Lady Gaga, and while Daily Mail readers may be advised to steer clear of her, she is tremendous fun. Making a career out of this stuff, however, may prove something of a stretch.

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