Trudy, you're so focused at the moment - cooking one thing for friends and eating quite another to stay on plan. Your strength will get you to where you want to be. Definitely go for the size 12 - can you return the 10 saying they sent the wrong size by mistake?? And how wonderful to be singing in Christmas concerts - Christmas music gets me more in the mood than anything else, but sadly I can't sing a note in tune. Wow, dinner-dance, holiday, concerts, Christmas itself... ENJOY!! XX