Board Thread:Wikia Discussion/@comment-24.19.228.119-20180410035430/@comment-26091666-20180410082517

It is possible to change Kongou into her shopping (or any other) outfit but it violates the agreement between you and C2 (developers of Kancolle) which may result in a ban from the game.

If you want to play it safe, you can view her CG inside the gallery (both within the game, so long as you have her) as well as the various wiki, etc.