Help me pick a dress!

Whitney • New Squishy Coming 2/28/18...🎀Evalina LaDonna 2/24/16 🎀....✨Angels: Zander 6M, Journey 3M
Work Christmas dinner is tomorrow night. I've only been with the company for almost 3 months... I want to make a good impression and don't want to look like a slob. Lol
Kind of self conscious in these dresses because of being pregnant, which one is better? 
With sparkles and red scarf possibly? 
Pretty safe bet, low key, and comfortable...?
My husband thinks I should wear this but I dnt have a jacket or sweater that I could wear and it's been pouring rain lately. 
I bought all three because couldn't decide...