Carrie Gets A Surprise Visit From Brad Paisley [VIDEO]

Carrie Underwood had to wipe the tears from her eyes during a performance in Nashville the other night.  While on stage during her concert, she got a big surprise!

At the part of the show where Carrie usually performs 'Remind Me', the #1 hit single she recorded with Brad Paisley, Brad came out from back stage to help perform their hit duet.

But it wasn't one of those planned surprises.  She had no idea.  She even cried when he entered.