In addition to choosing a stunning dress, you will also want to find some nice accents to go along with it. In many cases, this would be jewelry and a veil, but can include many other accoutrements.
For each particular style of wedding gown, you need to choose particular styles of jewelry. And since you cant wear your gown into jewelry stores, you will want to wear a shirt with the same color as your dress as well as the same neckline. This is the best way to capture the right look.
Starting with the earrings, you can look to your hair style to determine how to dress them up. If you have a shorter style or you're looking to pull your hair up for the wedding day, you will want to pick longer earrings that extend towards your neck. If you want something simpler, then diamond or rhinestone studs can be equally beautiful.
The neck is the focal point for most brides, so you can really dazzle them here. Look at your dress to see if you have a lot of detail or not. If you do, you will want to choose a necklace that's a little less extravagant. If you don't follow this advice, you will have multiple looks competing with one another and it can create a very confused and scattered look.
For a simple dress with a deep neckline, you should be looking at larger pendants or a more complicated style. Pearls always seem to work, but try on different lengths to make sure that they complement the entire look.
Here comes the veil
While many modern brides are opting to not have a veil, they still remain a mainstay for wedding attire. Veils today can come with rhinestones and tiaras built in and can make a dramatic statement as the bride enters the church.
What you want to keep in mind though is that the more complicated the veil, the less you want to do for your jewelry. Its another case of the competing looks and balancing the overall effect of the details. You don't want to have so many things going on that people forget to look at your face.
The best advice is to find one feature or one accessory that you love and make that the most complicated thing that you wear. Whether its a tiara or lovely diamond earrings, choose only one. Your pictures will thank you.