Yes tonight's dress was horrible. She is at that horrible inbetween stage where you don't fit your regular clothes and you don't think you are ready for maternity wear.
That dress needed cap sleeves and not a stupid halter neck attempt with the ribbon. Her assistant should have known this. The ribbon added at the last minute made the outfit look far worse than it was.
Truth be told she needs a much better stylist. At this stage of pregnancy she should be in a v-neck dress with detailing to make it appear like she has a waist. My friend went to a ball last week at 38 weeks pregnant and wore a sequined maxi dress in dark red. DofS would have looked fabulous in it. I think she got it from Asos for not a lot.