To start with, you should look at the design of the necklace. As it will be the design that gives a complete look to your attire, you need to choose a design that goes well with your dress. You can choose from the available options in the design, such as flower petals, beads, and simple stones. If you are wearing a plain solid-colored dress, you should choose a necklace that has a lot of patterns on it. This will help you create a nice look. Moving further, you should consider the length of the chain in your necklace. This is because longer chains suit people with different necklines as compared to chains that have short lengths. You can try the long necklace for women and then see if they suit your neckline. After you have finalized the design of the necklace based on the length, you should check whether the length of the chain goes well with the dress you will be wearing at the party.