Country Star Has the Balls to Play Testicle Festival

4/30/2009 3:10 AM PDT
You know you've made it as a country star when you're headlining the 18th annual Testicle Festival in Oklahoma.

Miranda Lambert is set to perform tomorrow at the four day event in Stillwater -- where there will be enough beer, music and fried bull balls to last you a lifetime.

No word if there are any sack races at the event.

** Follow TMZ on Twitter -- CLICK HERE to check out our new page! **