WATCH: Katy Perry Crashes a Wedding in St. Louis

Katy Perry crashed a wedding at the Four Seasons. This is video she posted:

Bride Hayley Rosenblum and groom, Blonie Dudney were dancing when Katy Perry showed up at their party.


Their guests said Perry came at the end of the reception and danced with the guests for about 10 minutes.

Perry played at the Scottrade Center Sunday.

And video from one of the guests:

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