Lily Allen has sparked an online war of words with gossip blogger Perez Hilton, branding him a "parasite".

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The outspoken singer turned to her page on social networking site Twitter to take Hilton to task after he posted photos of her dancing on his website, likening her on-stage moves to an "awkward cow".

The Smile hitmaker wrote to Hilton: "I'm sorry, we've already cast the jealous and bitter lonely old queen role. Next time eh?"

Hilton hit back hours later by posting: "Jealous of who? David Beckham, maybe. And if I wanted to be a f--ked up Brit, I'd rather be Amy Winehouse - whose (sic) got talent."

Minutes later he took aim at Allen's decision to sell her album at a reduced price, adding: "Congrats on your album doing well in America, though. It's REALLY HARD to sell copies when you discount it to $3.99. Desperate!"

But a miffed Allen then countered: "It's also number one everywhere else in the world, douchebag. Go away you little parasite... God, you're like so obsessed with me it's embarrassing."

Hilton proceeded to sarcastically thank Allen, whose new album It's Not Me, It's You is currently promoted on Perez Hilton's website: "Thanks for advertising on my website. I'll take your money (or the label's) anytime!"

But Allen zinged back: "I know you will, and that's what makes you a cheap a-- wh---. Now leave me alone, stop following me, I'm working."

Hilton's popstar pal Katy Perry was also dragged into the slanging match after another user questioned why Hilton was "ganging up" on the Smile singer.

Allen wrote: "Gang would imply he actually has friends, oh wait, actually he has Katy Perry who loves him for who he is, and not for the press."

Eventually the British singer got so fed-up with the quarrel, she put a filter on Perez's comments, telling pals: "He's blocked, just had to get to a computer."

(This news article provided by World Entertainment News Network)