The pants were the same.
My theory: the pants were very comfortable for dancing and looked great on TV, and so they were used for both performances.
Edit:
The following pictures are the same pants.
(I'm certain they're the same pants, because they have an external pocket on the outside of each leg-- which can be seen in the videos.)
In the first two pictures, there is a matching top (that wasn't worn on TV.)
(Sorry I don't have better resolution pics at the moment.)
