She caught herself, because she's Beyoncé.
Chances are, you missed it on the first watch, but Beyoncé was pretty close to slipping up during her complexly choreographed performance of "Formation" at the Super Bowl this evening. A mere mortal would have certainly succumbed to gravity and fallen in her position, but since we're talking about the Queen Bey, she was able to pass off the near-stumble like it was nothing.
A Vine has been circulating of the moment in question, where we see Bey briefly lose her footing and fall backwards slightly, catching herself and continuing to slay like nothing even happened. Watch the clip above, and check out the full performance here.