Please help with dress ideas for summer wedding (as guest)

[coldtoe]

I need a dress for a summer wedding and detest shopping so need some help! None of my pre-child dresses fit me. I was a 10-12 before and now am more a 14 (with a pregnant looking stomach, but that's another story). I'm after something like this ...

m.boden.co.uk/en-GB/Womens-Dresses/Smart-Day-Dresses/WH647/Womens-Knot-Detail-Dress.html
I like the turquoise one here.

I know the floaty front may make me look more pregnant but tighter styles just don't suit me and I won't feel comfortable. I want something that covers my back like the linked one (so not thin straps), can be sleeveless or have small called sleeves and either knee length or floor length. I prefer casual to formal so am happier with jersey or cotton than shiny typical wedding type dresses. Colour wise I prefer blues, greens, pinks, purples. Dislike red, orange, brown, beige, yellow.
By some miracle does anyone have any ideas? Or suggestions of shops to look in?
Price wise as little as possible. Under £50 for sure.
GAAAHHHHH weddings stress me out!!

Love these colours. Would it make my stomach appear gigantic? I'm wondering if I could not tie around my waist and have it more as a shift dress?

m.oasis-stores.com/lilly-blues-print-midi-dress/dresses/oasis/fcp-product/3170137461

I don't think the Oasis one would do any favours for a big stomach and I also think the Boden one runs the risk of looking pregnant, there's a lot of material under the knot.
There are a couple of other Boden ones that I think would work better for you and look a bit more dressy for a wedding - this shift or this strappy one. Otherwise Next aren't bad for things in your price range which flatter your stomach.

Thanks. Why do you think the ones you linked would work better for my shape? (Looking for shopping tips!) To my eye the strappy one is more empire line and would flare out under bust making me appear more 'pregnant'..... No? And why would that shift dress be more flattering that the oasis one to my shape? Men have it so much easier with one suit for all occasions!

I may be wrong! But for me anything that has a belt round the waist but is quite high-necked and straight is unflattering. I think the top on the strappy one would accentuate your slimmest bit and then flare out underneath - but because it is properly flared it doesn't make you look pregnant, it's just a full skirt. Whereas the knotted one has a lot of extra material that looks like it is waiting for a stomach to fill it. I like the shift one because the neckline is a little lower so gives it a bit more form. This may not apply if you have small boobs. Does that help?

(I'm not an expert just giving an opinion!)

Opinions gratefully received, I'm pretty clueless about dresses!

Just had a quick look at Coast which have some good dresses in the sale which would be close to your budget. They tend to be engineered quite well to hide bumps and lumps!