VIDEO : Taylor Swift Has a Stage Malfunction Moments After a Surprise Appearance From Guess Who?

How dare mother nature try to rain on Taylor Swift 's parade!
The "Shake It Off" singer headed to Nationals Park in Washington D.C. Monday night to deliver another sold-out concert to thousands of fans. But in between performing her No. 1 hits, the blond beauty experienced a bit of a scare when the extendable stage completely stopped working. She told the crowd during her gig, "They just told me in my ear that I might be stuck up here forever. This thing is broken.