JoJo Maman Bebe do great maternity wear, but at full price it's a bit too expensive in my opinion. But when the sale comes around they have great reductions, and things come down to a fraction of their normal price.
This long sleeved cowl neck maternity dress looks like a great choice for winter or spring, and the 'grape' colour is reduced from £35 to a really low £9, and there's free delivery too!
It's sized in XS/S/M/L rather than conventional dress sizes, but there is a size guide you can click on in the dress description to check you are getting the appropriate one. All sizes are in stock at the moment. The dress does come in a blue colour as well, but that is still full price.
While you are on the site it's worth looking at the rest of the maternity wear that's on offer as there are a few other pieces that are a really good buy too, and remember that everything on the JoJo Maman Bebe website comes with Free Standard UK Delivery.