Casual weddings can be the most difficult to choose an outfit for because there isn't a set dress code. It still needs to be slightly more formal than your everyday wardrobe. Stores like Anne Klein and Ann Taylor LOFT have lots of dresses to choose from. Here are eight night looks for casual weddings:

1. Appropriate Footwear

This is especially important if you're going to a garden or a beach wedding. Even if you have a shorter evening dress, it can still work if you wear the right shoes. This might be a ballet flat or sandal; you don't want your heels digging into the grass or sand.

2. Upgraded Sundresses

Casual sundresses can work for wedding guests. Look for small shrugs to cover strapless versions. You can also add a floral pin or a ribbon belt to make it slightly more appropriate and elegant.

3. Bohemian Looks

You can still incorporate your everyday style into your wedding look if you tone it down a little bit. A Bohemian tunic style dress can be appropriate if it's long enough and has a muted print. Pair it with fashion forward booties to create a wedding outfit from what you already have in your closet.

4. Dress Suits

A dress suit for a wedding can be more casual with a shorter length. It can feature embroidery or a satin material. Stay away from metallic colors that are more formal and go for lighter pastel tones.

5. Pant Suits

Pant suits can also be appropriate and might use a lot of items from your regular work wardrobe. Just go with a lightweight chiffon or organza jacket. You can also get an embossed leather jacket or a metallic version. The key here is to make sure that you have at least one elegant piece to counteract the more casual items such as black trousers.

6. Retro Looks

The trapeze dress is another popular style that can be casual depending on the material. It has a retro flair to it and a higher neck. This will be one of your least expensive options, but the distinctive silhouette might become dated in a few years. Depending on the material, dress it up or down with your hair. This dress works well with lots of loose curls for a more formal look. Wear your hair straight and get a retro look with a flat iron for more of a casual appearance. Just make sure that it doesn't look too much like a costume by pairing it with more modern chunky jewelry.

7. Sheath Styles

The sheath style features small straps and a classic hourglass silhouette. You can really make this silhouette slightly more formal by looking for a lace version. Otherwise, it would just be something that you'd see with a jacket at the office.

8. Knit Dresses

If you want to be comfortable then go with a knit dress. This is also going to be one of the least expensive and easiest to care for fabrics. You can find a lot of faux flower or ruffle details at the neckline to dress it up a little bit.