Help! Black tie wedding 28 weeks pregnant.

[39andabit]

Hoping for some ideas and advice. I have a wedding to go to in just over 2 weeks. Very swanky black tie, I’m completely lost as to what to wear. I’m normally a size 6/8 slightly pear shaped, I can’t fit into the couple of dresses I have and am having a dilemma about what to do. I’m not that big and some recent Seraphine stuff I bought still looks big on me, do I go maternity dress or try and find a stretchy or empire line normal dress? I’m thinking full length so I can wear flat shoes…
I looked at renting but you can’t try on in advance so I think this is too risky. Worried that ASOS stuff might look a bit cheap but equally don’t want to spend over a £100 on a dress I’ll only wear once!
If anyone has any ideas of what shape or any brands might work or pictures of them in evening wear whilst pregnant that would be great. Thanks 😊

I'd look for a dress with a bit of stretch and not specifically maternity
For example

https://www.johnlewis.com/phase-eight-odetta-embellished-dress-navy/p4890513

Have a look here
https://www.chichiclothing.com/collections/dresses

https://www.silkfred.com/womens/clothing/dresses/maxi-dresses

https://www.johnlewis.com/browse/women/womens-dresses/size=6/size=8/maxi/black-tie/_/N-flwZ7lsiZ1z13zdfZ1z0ropcZ1z0rov3?sortBy=priceLow

Ah thanks so much @justaweeone funnily enough I’d looked at that first one already, big fan of a classic navy. I might order it just to see if I can get away with it. The only problem with Phase 8 is I’m quite small and short so sometimes there stuff drowns me a bit.
Will check out the other websites too.