entremet
Member
I watched My Geisha with my ex girlfriend who was Japanese. While that's an old movie with definite old timey orientalism... But the actual act of a white person dressing like a geisha is, if anything, "kawaii".
Let's ask the Americans in here: would you honestly be offended if anyone in the world dressed like a cowboy?
Sure. I don't see it as racist myself personally. I'm just stating that because it's really the only valid way to answer the OP's question. If the OP really wants to go the extra mile.
Asking non-Japanese would not give him or her the full story.