If you opt for a traditional Thai wedding, one of the best parts will be the beautiful costumes, ranging from fine silks with gold or silver-coloured threads and elaborate beadwork to more casual ensembles. There are no specifically designated wedding costumes; instead, the bride and groom will simply don traditional formalwear or the Thai national costume.

For women, the outfit reserved for formal occasions is known as chut thai phraratchaniyom (literally translated as “Thai dress of royal endorsement”), which includes several styles of dress. One of the more popular styles for weddings is the elegant Thai Chakkri dress (also known as Thai Prayook, with slight modifications), which is a full length wrap-around sarong with two pleated folds, and a one-shouldered sleeveless top made of lace or heavily pleated silk, topped with an optional over-the-shoulder, floor-length shawl.

Thai Borompiman is another preferred dress for brides. It is comprised of a rounded neck, and long sleeved blouse that is either buttoned at the front or the back. The top is tucked beneath a floor length skirt with two front pleats. A brocade fabric is typically used to create a more luxurious look, and the dress can be worn with the elaborate traditional Thai ornaments.

For a more casual, yet elegant look, the Thai Dusit style features a wide, rounded neck, sleeveless brocaded bodice, and long sarong with pleats. An ornamental belt can be worn, along with either traditional Thai or western style jewellery. Every dress style can be worn in any color, except for black, which is considered to be bad luck. For weddings, common hues are cream, peach, pastel yellow, red, pink, and lavender.

The groom’s outfit is fairly simple, consisting principally of suea phraratchathan (or “royally bestowed shirt”). This top was designed to serve as the Thai national costume by the court tailors in 1979, and it has since been adapted for public use. The shirt is similar to the Nehru jacket, with a Mandarin collar with hemmed edges. It also features slight tapering at the sides, as well as a placket and sleeves decorated with five round flat buttons, which are covered with a flap. The shirt can be short-sleeved or long-sleeved; the latter comes with an optional sash, which is considered to be more formal.

To accompany the suea phraratchathan, regular black dress pants will suffice. Grooms can also elect to wear the chong kraben pants, a lower body, wrap-around cloth whose twisted ends are pulled between the legs and tucked into the back of the waistband. These pants can be of any colour that complements the shirt, and they are usually worn with white knee socks and black dress shoes.