The colorful traditional Korean costume is called hanbok (한복). The women’s outfit consists of a shirt (jeogori) and a wrap-around skirt (chima). Men wear jeogori with a pair loose pant (baji). These dresses, which comes in cheery, vibrant colors are from Hansam Hanbok.
The Korean bride who chose to wear a traditional costume on her wedding may also wear an ornamental headgear and either the wonsam (ceremonial silk top coat) or hwarot (silk embroidered robe, usually in red) over her hanbok during the wedding ceremony.
The Hallyu (한류) or Korean wave which grew stronger in the early 2000s may be responsible for the costume gaining worldwide recognition. A Chinese friend of mine wore hanbok as one of the dresses for her wedding photo shoot. :)
Can you resist such pretty color combination?
More costumes, including those for the ajuma set at the website.