Rihanna was in Paris as part of her ANTI world tour, and was seen strolling around the city, just blending in, you know, how she does. Of course, a big part of traveling comfortably is a pair of sensible walking shoes, and since this is Rihanna, those shoes were silver stiletto high heels.
As if walking in these high heels didn't seem dangerous enough on solid ground, Rihanna decided to traipse over a metal grate in them, and BECAUSE SHE IS MAGIC, she avoided getting her heels caught in the grate's tiny, almost perfectly stiletto-sized holes.
Rihanna and the grate apparently have a deal wherein she deigns to place her ridiculously perfect feet on it, and in return, it supports her without ever once letting her heels get trapped in one of its "high heel booby trap" holes.
People on Twitter collectively shared their Rihanna worship, grate anxiety, and general feelings about how close she was to breaking a heel/totally eating it.
If she did fall, falling would be the newest trend in a heartbeat.