The Britney Spears mess gets worse and worse.

Britney Spears needs help quickly. Her up and down behavior is scaring people. Drinking and partying one minute....crying and theatening self harm another minute. Get this girl some therapy...No joke.
Page 6 has some more insight into the MTV mess...
Meanwhile, Spears was agitated because she didn't like the outfit MTV had selected for her.
"MTV wanted her to wear a corset outfit. It would have looked great and covered a lot of things up, but she hated it and didn't think it was sexy enough."
Instead, Spears changed into a spangly bra-and-underwear outfit she'd brought with her that emphasized her weight gain over the last year.
MTV execs weren't the only ones worried about Spears' impending debacle. Another spy said, "The dancers were texting pals, asking them to pray for them. They were worried."
After Spears performed at the VMAs, she allegedly broke down in tears but then partied until 3 a.m. She changed outfits several times and again was photographed by paparazzi wearing no underwear.