After the Miranda Lambert’s turn as a guest judge this week on Project Runway, some of the designers may have wanted to run away from the runway!

The aspiring fashion designers were challenged to make both a performance and red carpet look for the country megastar.

Miranda Lambert Retires a Roadie

And when it came to one not-to-runway-ready look from contestant Matt, Miranda didn’t hold back.

Beyoncé Loves Miranda Lambert and Blake Shelton

“You know what? I don’t even want to talk about it, because you obviously know what’s wrong with it,” she said. “I just want to talk about you not having confidence in your own craft. Because, if you don’t have confidence in your craft, then no one else can. I can just tell that you can do better. Like, where’s your confidence?”

In the end, Matt’s little black drab dress got him eliminated.

To see Miranda’s winning look, watch the full episode of Project Runway here.

Project Runway airs Thursdays on Lifetime.