Sonja attended Luann's performance with fellow housewives Dorinda Medley, Ramona Singer, Tinsley Mortimer, and Bethenny Frankel.
While she was performing on stage with Luann, she got a little carried away! As she was dancing along to the song, "Money Can't Buy You Class," she pushed a microphone down the front of her dress and whipped up her skirt in the front.
That's when the wardrobe malfunction happened and she accidentally gave the crowd an R-rated show! She was only wearing a black bra and underwear underneath her dress, so everyone got an eye-full.
This wouldn't be the first time Sonja has gotten wild at one of Luann's shows. She's known to get crazy on stage and always show a little too much. This time, however, she showed way more than she planned!
What do you think about Sonja showing it all at Luann's show? Let us know in the comments!