Weak ask ~ what is the moon pajamas?

Some time ago, the clothes bundled in the clothing package appeared in other packages around 2008, but there was a time limit, and there was no limit on what was in this package. This dress is not only for sale.

The appearance is an ordinary dress with yellow moon and stars on it. The hero wears bright dark blue, and the heroine (I'm afraid it means light blue and black girl) is pink.