Cowboy Wedding Invitation Country Family, Formal Wedding?

Country Family, formal wedding? - cowboy wedding invitation

Is this a recipe for disaster? My mother and I recently went to my cousins wedding invitation specified, and formal dress. Then we went to the nines, but also invited all the guests (in my wedding) will be in blue jeans! Bolo Ties and jackets!

Even the groom and groomsmen in jeans, a suit and tie and cowboy boots! In my opinion this is not the official uniform. I had planned a formal wedding, but if you see such as clothing, what's the point? Has anyone any idea how to word the invitation to enter, no jeans!?