Hi Wispa,
Well all 4 dresses arrived today!!

Can't believe how fast the delivery was!
The flutter dress (black one) was a no no as the lady had told me - even though I ordered it in a size too big just to try (14-16). It is a stunning dress but little room up top and no stretch to the material so less likely to grow with you.
The Grace dress was a good fit but the colour in reality is quite brown under the lace so not ideal for me. Good choice for larger bust though and had lots of stetch and was cute over the bump.
The lace does feel delicate so would need to be careful when wearing it.
The neckline was fairly low too so would need a discrete bra underneath. But they do it in chocolate and gold or black too which I suspect are nicer colours in person.
By far the best fit was the Watercolour dress (white and blue above) so I'm keeping that one. It kicks out nicely at the bottom and gave a more flattering shape and slightly more room on the bust than even the Grace dress. I felt actually pretty in this one and not like a heffer!
I'm keeping the mam-licious one for my mate's hen do too as it was a bargain at ??32.
Very chuffed overall and impressed with Tiffany Rose customer service and prompt delivery. Recommend giving them a call if you have a query on sizing or colurs to suit.
My advice for a larger bust is to go with something of the same shape as the Watercolour dress or grace dress. Definitely avoid the Oyster style!