First you wore panties, then you dressed up, now you are locked in a cage that you lost the keys for and there is only one way left to feel release. Let's hope you are a fast learner.
Its been 3 weeks since you got locked, you are not allowed any stimulation of your little clitty at all. This is what you have to resort to for orgasms now.
She dressed you up in her old uniform and took your photo. You looked different enough, but people who knew you would know it was you. She then used these photos as leverage to get you to do more and more humiliating things until finally she locked you i