How to unlock outfits

[frog]

For some reason I can't found any information about this online, (it keeps redirecting me to control for some reason.) I beat the game and got the credits just wondering how to unlock the outfits, I have a couple but I don't know how I got them. Thanks in advance

[Saber Hayashi]

You get the 3 dungeon outfits for beating them the first time round. the others i believe you get by beating each stage of overtime in your room. There may be others that i haven't found yet.

[kilroy411]

Like the person above said, the first 3 are from the 3 dungeons. The rest are all from the overtime mirror in your room. Good luck!