Rihanna has seen a nice surge in her career lately.

"Only Girl In The World" made its way to the top of  almost all the music charts this Spring.

And she's embarked on her big "Loud" summer tour.

But someone needs to check her shoes! Things seem to fall when she's around!

Her co-headliner, Cee-Lo Green, has fallen off the tour, if you will, after some comments he made on Twitter.

Then, last year, she almost fell off the stage in France.

And then over the weekend, she fell down while onstage in Edmonton, Canada.

What I find ironic is that, while she's on the ground and the microphone is away from her, the singing continues!!! Is that proof she's doing the lip sync thing?

Watch and decide for yourself: