Aerial performer Erendira Wallenda has just broken the world record for the highest suspension over Niagara Falls in the United States.
She dangled from a helicopter about one hundred metres above the waterfall to perform her tricks.
She dangled from her teeth, did the splits and even hung upside down.
She was attached to a rope harness to keep her safe but she didn't have to use it, phew!
Take a look.