How these two women kept their cool we'll never know.

Beyoncé kicked off her 'Formation' tour in Miami last night and when the time came to perform 'Single Ladies', she surprised everyone by bringing to fans from the crowd up onstage to do the dance routine with her.

Now the prospect of doing that dance alone would be enough to intimidate some but doing it in a stadium in front of Beyoncé herself? That's a whole other level of terrifying.

So how did the ladies in question react? By killing it.

Seriously, even Beyoncé herself was impressed.

Beyoncé's 'Formation' tour comes to Dublin's Croke Park on Saturday July 9th, with selected tickets still available.

Via Mashable