the "out" crowd

so, there's a cocktail party going on tomorrow evening, thrown by one of my co-workers... but i wasn't invited. and now i'm in a really awkward position. see, last week i was talking to my friend T (the co-worker who came to the prince concert with me), and she was like, "hey, do you want to carpool to N's party next week?" and of course my response was, "what party?" T insists that i should go, she says that a lot of work people are going and the lack of an invite must have been an oversight on N's part. but i don't know... maybe it's the dorky 14-year-old still stuck inside me, feeling a bit hurt that i wasn't invited, oversight or not... but i just don't think i should be there. first off, i don't think i'd have much fun, knowing i hadn't been invited in the first place... and second, maybe it wasn't an oversight, and there's a reason N didn't invite me... which would mean that if i showed up, it would be really awkward for her. but then again, if i don't go, and it was a mistake, then N's going to be upset with me for choosing not to go.

am i being totally ridiculous? should i get decked out, show up and not care, and keep my cosmo glass full all night? or should i be cautious and just go out dancing with my friends? i just don't want to be somewhere where i wasn't invited. argh.