Lilly Allen performs at Chanel's fashion show in Paris. Photo: Tony Barson, WireImage

Lily Allen strikes again!

We're already so jealous of the free Chanel duds she's getting and the fact that she's starring in ads for Chanel's new Cocoon bags (surely she's got a few of those in her closet).

Now, to add to the envy, her newfound pal Karl Lagerfeld invited the British pop star to sing on his Spring 2010 runway, according to Grazia UK.

Donning head-to-toe Chanel -- including a metallic skirt, sequined top with feathers of some sort sprouting from the shoulders, matching gloves, two-tone tights and mary jane pumps -- Allen sang during the finale of the show, reports Grazia.

A mini haystack emerged from the catwalk carrying the chanteuse and her band; the female backup singers looked like they were also rocking Chanel. (Swoon).

The show itself was shown on a runway scattered with hay and with a barn-like backdrop of wooden beams and models playing in the haystacks, perhaps all inspired by Lagerfeld's new pad (ahem, castle) in Vermont.

And while the fashion that marched down the catwalk was full of lace and tweed and all of the other Chanel hallmarks, farm boots and cuffed denim were thrown in for good measure.

To cap it all off, the Kaiser himself wore jeans to take his final bow.

Other celebrities in attendance included Prince, Claudia Schiffer and Rihanna (in a more conservative look compared to late).

According to Grazia, the celebs went wild, along with the rest of the audience, when Allen performed her new track "It's Not Fair."

The video for the new single (watch it here) also features a barnyard theme, complete with chickens and hay. Coincidence? We think not.

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