Long story short, this is the first year I will be attending a proper Christmas party. Normally I avoid them like the plague, figuring that I spend enough time with my colleagues in work time without giving up my spare time too.
This is a new job for me in an organisation I would like to stay in and progress within. On a daily basis we have a strict uniform (which suits me down to the ground!) out of work I am very much a jeans, checked shirts and walking boots type. I'm fairly clueless TBH but even I'm aware this is not suitable Christmas party wear 
I never wear make up, but have made valiant efforts lately to have some sort of skin care routine. I do have a decent hair cut which I feel covers a multitude of sins, and I ensure it's cut regularly.
So how do I "do" it please 