Perez Hilton, the mild-mannered internet arbiter of taste and discretion – oops, sorry, cruel, hypocritical, bitchy slanderer of human beings who has called teenagers "sluts" and Adam Sandler's baby "ugly" in his time – has stepped up his war of hate on our own Lily Allen. And guess what? Our Lil's bloody raging raging about it.

Here how Perez kicked things off:

"It's hard to stay on top in the music industry. Just ask Lily Allen! Lily used to be Capitol Records' "golden girl" but lately she's just been slipping. She's known these days more for being a tragic train wreck than a musician. She knows it too. That must hurt!...Lily is starting to look like washed-up goods."

COME ON LILY, GIVE IT TO HIM. And she did:

"He bullies young, successful females; people usually bully people they're jealous of so I'll let you come to your own conclusion on that one."

Guess what? Perez retaliated:

"In her blog rant from earlier today, Lily Allen spread a bunch of lies, most of which are easily debunked. Like this one! Claims the British trainwreck, 'And this is not meant in any way [to be mean] but I'd never heard of Katy Perry before I came here [to L.A.] a few days ago, I didn't even know she was on Capitol." Uhmm, liar!'

Then he posted this picture:

MORE LILY, MORE:

"How can I possibly have been to Capitol's office in the last year when my visa to get into the States was only granted three weeks ago?...Anyway, ou can probably remember the names and faces of all seven fans that turned up to your clothing line signing the other day."

Then she made this amazing parting shot:

This is the first time someone's stood up to Perez, a one-man bitchiness-machine who vomits bile on an hourly basis, and cares not a jot who he hurts. The only people he doesn't slag off are people who have made videos for him like Madonna – and then he kisses their arses so enthusiastically his nose magically turns a very dark shade of brown. (Eww, I know that's disgusting, sorry.)

But seriously, keep on keeping on, Lily and don't give him an inch. You owe it to yourself to become a one-woman hate-trouncer – and everyone else will thank you for it.