Oh, how we love Miranda Lambert. Let's face it she truly is one of the best on the charts right now and fans who attended Chris Stapleton's concert in NY on July 16th got to see exactly why everyone loves her.

As Stapleton sang she casually strolled out onto the stage and you can hear the crowd erupt as she joined him for the duet “Fire Away.”

Her appearance while a surprise isn't out of reach as her boyfriend Anderson East is opening for Stapleton on his tour and Sunday was his birthday. She, of course, would be on hand to help him celebrate and didn't think twice about taking the stage and wowing fans with her performance.

There is also footage of her singing Happy Birthday to her love below. So check out both performances and let us know what you think in the comments below.

Source: Taste of Country