Watch Rihanna Take a Nasty Tumble During Canadian Concert

Rihanna slipped up during a concert in Canada this weekend. The songstress took a nasty fall on stage while performing for an audience in Edmonton, Canada on her Loud Tour 2011.

While performing her smash hit "What's My Name?" the sultry singer, dressed in a bustier and short shorts, took a pretty nasty tumble.

The sky-high stilettos she was wearing were most likely the factor.

"Did I tell u guys I fell in Edmonton! Lol... #ManDown #rockstarsh*t" she Tweeted after her concert.

And it looks like Rihanna is letting her little tumble or busy tour schedule get in the way of her partying!

Today, she Tweeted about her crazy Sunday night antics.

"I officially lost my liver last night!!! she Tweeted, followed by, "Apparently I also molested 2 girls in the club!Whoever u are...ladies I thank u! U made my night way 2 much fun! Atleast that's what I heard"

She concluded: "The worst part about having so much fun is not remembering any of it!!!!"

RiRi also announced that she would be adding an Alabama tour date to her Loud tour and all proceeds will go to tornado relief efforts.

Watch her fall in the YouTube clip below.