Worried you'll sample a little too much of your cooking before the guests arrive? Opt for a monochromatic jumpsuit and oversize blazer. It looks chic, and will hide any stray blobs of cranberry sauce. Pull the blazer over that paunch, and reach for another slice of pie — you deserve it.
Your friends who said they'd help are nowhere to be found. Go all Stepford in a cropped jacket (the better to avoid kitchen fires!) and miniskirt combo with flats, and no one will be able to tell that you've been sweating it in the kitchen on your own.