These signs

[catangi]

This house (http://blog.naver.com/PostView.nhn?blogId=myskyring&logNo=140157822462&redirect=Dlog) and the blog's header image has some light-up Simlish signs. Are the signs custom content or did they come with an expansion pack? And what about the posters?

The blog is in Korean but as far as I can tell no CC is listed. I recognize most of the other objects.

[megativity13]

The signs in the header came with Showtime and a few in the pictures are from Late Night.
The posters also came with Showtime.