Help me save my dress

[marmaladeskies.livejournal.com]

I bought a JSK from Yahoo!Japan and finally recieved it today, only to discover that it has a great big stain down the front, it looks like curry to me D: I have no idea how to treat such a stain, I used some Vanish Oxi Spray and put it in the washing machine, but it didn't affect the stain at all, and I've tried using my Tide To Go pen which hasn't done anything either.

My dress is this one in pink, and the stain is all down the chest and on the waist bow so it's not like I can hide it or cover it in some way. Does anyone have any other ideas on things I can try to get it out? I tried asking my mum and she told me curry doesn't come out so I'm really hoping she's wrong.

EDIT: Thank you so much for all of your replies! ♥ Thankfully leaving it in a solution of Oxyclean for 45 minutes worked for me ^^ Hopefully this thread will help others in similar situations and save future dresses!