im a 21 year old woman and in a high position at my job now we are having a formal party sort of thing so im wearing my long black evening dress and its business related so there is going to be some important people from outside our company there, anyway im a lesbian and the invite states 'plus one' so i really want to take my girlfriend/partner Sara, she will fit in, in her formal dress now im out to everyone so it wont be a problem but im not sure how to introduce her to the vips and there wives, i mean i dont think saying 'this is my girlfriend sara seems right' any ideas? the vips are the only ones there that i dont know and they wont know im lesbian