The Girls Aloud singer, who has starred in a number of films since the band called a hiatus, is said to be working on a set of 'edgy' songs similar to Lady GaGa's sound.
"She’s been laying down a load of tracks that are very ‘Lady GaGa’ [in] style. She’s working her arse off," a source told Dean Piper.
"She’s hoping to release the album early next year and is going to have an entire style makeover for her solo launch. She wants to be edgier than ever before and has already been consulting with her stylist about some ideas she has for some custom-made outfits.
"She’s very keen to shock and be totally different from how she was in Girls Aloud. She wants to shake up her entire image and become an icon like GaGa."
It was recently reported that Harding was penning a number of tracks with Bodyrox singer-songwriter Luciana.