If her new fling with Niall Horan hasn't already send Bieber through the roof, Selena Gomez's steamy new "Hands to Myself" music video, which features the scantily clad singer writhing around a bed, most certainly will.

Hubba hubba!

In the music morsel, the 23-year-old plays an obsessed fan who breaks into the object of her affection's home and then walks around in her undies, while fantasizing about some amorous entanglement with the hottie, played by Christopher Mason.

Meanwhile, Selena apparently is out for blood upon hearing the news that the mom of three Kourtney Kardashian has been hooking up with her on-again/off-again boyfriend Justin Bieber. In Touch is reporting that Selena even called up the reality star and tore into her. A source tells the site, “Selena was calling Kourtney a w**re and a s**t." The source added, “When Selena called her, Kourtney asked how she got her number, but all Selena had to say was, ‘I hope you used protection.'”

Burn!

Well at least Selena has Niall and a new song!