A few people sent me messages asking about more options for places to get Halloween costumes in Korea. Today I came across a decent online costume store. With Halloween 2011 approaching quickly I thought some people who can't make it to a store may find it useful.
Although the site is only in Korean there are some English sub headings and it's easy to navigate and see the costumes.
They have both men's and women's costumes including all the staple Halloween choices for women (read slutty Halloween choices) like army girl, nurse, maid, Wonderwoman, fairy, angel, devil, witch and various Disney characters.