Heidi Montag writhes around in a bikini in her latest attempt to make it as pop star.

The shameless Hills star is shown thrusting her surgically-enhanced breasts at the camera as she frolicks on the beach in the video for new song Blackout.

Even more disturbingly, it has emerged that Heidi's new husband Spencer Pratt is also keen to branch out into music.

Spencer is planning to hit the studio to record a hip-hop album under the name Great White.

He said: "First I took over TV, the tabloids and the Internet - now I’m going after the airwaves. Nothing can stop The Great White.”

According to Usmagazine, his debut track will be called I'm A Celebrity.

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