Things like the characters of the "Westworld" series are dangerous territory, but it is still possible to create a harmonious image and at the same time not resemble a cowboy who happens to be in a modern city. Accessories, shoes and fringed clothing are perfect. Just wear them with more neutral clothing.
A bolder solution is an abundance of leather items. Such a combination will look especially beautiful on girls: a short skirt and shirt made of leather, boots in the spirit of Westerns - a great image for informal events. For the most daring, there is a solution to add a little rhinestones to the image. Glitter for sale can be purchased online at a low price.
The combination of a checkerboard and a rough, dense denim is always a good solution, and if you choose the right accessories - for example, a fringed bag or a drawstring. Just do not overdo it with active details: one catchy and recognizable accent will be enough.