Remember Britney Spears’ terrible performance at the 2007 MTV Video Music Awards? Well, a new tell-all book is revealing that the secret to Britney’s terrible disaster of a performance was tequila - and lots of it!

[Britney] had been planning her routine at the prestigious event for months to prove to the world she had fully recovered from her personal problems.

However, insiders have now revealed she wasn’t mentally ready to perform and was drunk when she went out on stage.

In his new book ‘Britney: Inside the Dream
‘, writer Steve Dennis claims: “Britney herself managed to ruin the most important performance of her life. Hours before the show, her anxieties raged. She decided it was a good idea to start drinking tequila shots to calm her nerves - one after the other.”

Britney’s fragile mental state was also reportedly tested when her ex-boyfriend Justin Timberlake came into her dressing room to wish her luck.

Dennis revealed in the book: “Justin was cool and couldn’t have been friendlier, but that wigged her out more.”

Britney Spears these days though, as we know, is a total success story, having successfully battled drugs and alcohol, regained posession of her kids, and is now touring Europ on the ‘Circus’ tour.

If you forget just how bad her performance was, you can watch the video - click ‘Read the rest of this entry »’ to watch the video of Britney Spears supposedly drunk on stage!

Read the explosive new tell-all book about Britney Spears struggle with drugs, drink, depression, and more ! Britney: Inside the Dream