dressing rooms

One feature that I really love in a house is a dressing room - a little private space thats all your own to make yourself pretty or just escape from it all! I think for my own I would like to have my desk in there surrounded by cupboards housing all my clothes -perhaps a small tv and a window looking out to a garden. I guess what I'm really after is a den / closet! They can be masculine or feminine as seen above

I especially love mirrored closet doors like these below. a dressing room from James Radin via 'cote de texas' last month.

Do you think it's silly to have a dressing room like this or important, obviously a luxury? I suppose there are many places one can escape to -where is your refuge?