Rihanna took an embarrassing tumble while performing her hit single, "What's My Name?" on her 'LOUD' Tour.

Stopping in Edmonton Canada on June 22, the singer, dressed in a sequined bikini top and sexy short shorts, tripped over her stiletto ankle boots, and fell flat on her face.

Ouch.

HOT SHOTS: Rihanna

Rihanna's blunder was not enough to stop the singer, however, and she quickly stood up and continued her performance.

Following a 45-date, sold out European tour, Rihanna is bringing her 'LOUD' tour to North America this summer.

The singer's last tour, 'Last Girl On Earth,' drew in over half a million fans, and judging by her performance at her June 4th, Baltimore, Maryland concert, where Rihanna covered Prince's 'Darling Nikki' and gave an audience member a lap dance, fans are in for a truly, ahem, unforgettable show.