Lily Allen, Perez Hilton Battle It Out On Twitter

British singer, celebrity blogger engage in public catfight, 140 characters at a time.

[artist id="2389411"]Lily Allen[/artist] might claim to be [news id="1604906"]"pretty damn happy"[/news] these days, but it's clear that she's not running away from any fights. Case in point: the rather nasty war of words she recently engaged in with celebrity blogger [artist id="3137265"]Perez Hilton[/artist] on Twitter.

Yes, for most of Monday (February 16), the two duked it out — 140 characters at a time — on the micro-blogging site after Perez wrote a post (er, "Tweet") letting it be known that Allen was casting for her new video, and that he should be considered for a role in the clip.

The quick-witted Brit fired back — writing "Oh, I'm sorry, we've already cast the jealous and bitter lonely old queen role. Next time, eh?" on her Twitter page — and just like that, it was off and running.

"Jealous of who?" Hilton responded. "David Beckham, maybe. And if I wanted to be a f---ed up Brit, I'd rather be [artist id="1742872"]Amy Winehouse[/artist] — whose [sic] got talent."

The two then exchanged "you're so obsessed" barbs, before Hilton decided to take the beef to the next level, taking a potshot at the sales of Allen's just-released album, It's Not Me, It's You, which is selling at a low retail price.

"Congrats on your album doing well in America, though," he wrote. "It's REALLY HARD to sell copies when u discount it to $3.99. Desperate."

"It's also #1 everywhere else in the world, douchebag," Allen replied. "Go away you little parasite."

Hilton then tried to play nice — saying that both he and Allen were "big fat c---s," and that's why he loves her — then abruptly switched gears, getting catty about ads Allen's label had purchased to run on his Web site.

"P.S. Thanks for advertising on my website," Hilton wrote. "I'll take your money (or the label's) anytime!"

"I know you will, and that's what makes you a cheap ass w---e," Allen responded. "Now leave me alone, stop following me, I'm working. Bye x x."

Dang! Soon after the exchange, [news id="1602918"]Allen attempted to block Hilton[/news] from reading her Twitter updates. Apparently, this didn't work, as Hilton repeatedly tried to re-ignite the feud, even attempting to bring Allen's U.S. labelmate (and onetime rival) Katy Perry into the mix, but alas, Lily was having none of it, and by Tuesday morning, Hilton was back to business-as-usual.