We knew those extensions Britney Spears sported during her super-craptacular dance number Sunday looked especially cheap.

According to Norm Clarke’s Vegas Confidential:

… she wore extensions from Jessica Simpson’s Hair-u-Wear line, Vegas Confidential has learned.

Backstage spies say Spears pitched a fit. She had arranged for her own hair stylist to make the trip for $10,000 and “she wanted to go brown, but her people said ‘no way,’” said a backstage source.

Oh, the famous Ken Paves/Jessica Simpson Hair-u-Wear line. Allowing trashy mallrats across this great land to emulate their coked-out, suspended-license-defying idols.

Really, who needs a stylist when you have a mass-market line of Barbie hair at your disposal?

You can always cover up the bad patches with a well-placed c.z.-laden hand. Just like the stars!

Britney Spears went for the classy look on her first day of being single. She’s now wearing her boobs on the outside! If she can figure a way to wear her vajayjay on the outside, you know she will! She is THAT determined to show off her naughty bits, despite the fact that the bloom is definitely off that rose.

I’m bringing trashy back, y’all!

Britney Spears, try as she might, just can’t kick her trashy togs tendencies.

She’s consulted professionals and expressed a desire to clean up her sartorial act and emulate Katie Holmes, but apparently can’t stop donning hideous outfits as she heads out for nights on the town.

Is there a 12-step program for an addiction to see-through synthetic, y’all?