Rihanna is back – as the sexy star of Kanye West's new video.

The singer vamps it up in raunchy lingerie in the promo for his new track Paranoid, the fourth to be taken from his album 808s & Heartbreak.

Kanye lets Rihanna take centre stage, and so we have the Umbrella star striking a series of seductive poses for the camera and tossing and turning sexily in bed.

Meanwhile, the singer's ex-boyfriend Chris Brown has just released a video of his own.

The Run It star posted a clip on Youtube in which he insists he is not a “monster” following his altercation with Rihanna in February that allegedly left her battered and bruised.

We prefer Rihanna's vid.

Rihanna in Paranoid

Chris Brown: 'I Am Not A Monster'