Rihanna walks like she's immortal and it's freaking people out

Only one thing is for certain in this world: there is very little Rihanna cannot do. 
The Barbados native is an international superstar who still manages to juggle a cosmetics brand, fashion line, and a charitable foundation. Oh—and she can defy the laws of nature and somehow walk gracefully on sidewalk-grates in the tallest of high heels and never fall.
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