coup de main - noun
\ˌkü-də-ˈmaⁿ
Definition of coup de main : an attack that achieves complete surprise.

Taylor Swift and Rachel Platten performing 'Fight Song' together live.

| by Shahlin Graves

Rachel Platten was Taylor Swift’s latest special-guest on her 1989 Tour, joining the popstar on-stage during night two of her Philadelphia run to perform 'Fight Song' together live.

Watch the performance below...