Need a floaty dress ? Need guidance please lovely mumsnetters !

[HumptyNumptyNooNoo]

A lovey friend is having a laid back summer wedding in the grounds of a charming farm. It's outside /large tent thingumy on grass - so flats or wedges on feet ... Bride had suggested a floaty dress type theme for those of us in the wedding party all day and into the night. ( think evening only peeps are in what ever they like ?) I agreed that I'm happy to go 'floaty' but no clue as to what to buy !!! Or from where !! Any ideas wise mumsnetters ?
I'm 5'8" and size 12 in jeans but 18 in tops as busty. I have time to take a bigger dress in ( as have done this before with a fab friend who sews for pin money )

Thank you for any help !

Colours and budget?

ASOS has quite a few if you refine the search to maxi occasion/bridesmaids dresses

Like these:
www.asos.com/prd/11235243?acquisitionsource=pasteboard

www.asos.com/prd/11531924?acquisitionsource=pasteboard

www.asos.com/prd/11672335?acquisitionsource=pasteboard

Wrap dress could be good based on your proportions.

Pretty kitty fashion is worth a look too.

Wow thank you MsSquiz and wildhairdontcare these are lovely !

imsorryiasked cololurs... I think I can wear most except bridal ones ... i don't have any favs ( I'm scandi/ blonde ) budget... erm if I can wear it again then don't mind spending up to three figures.

Thank you again, sorry for delayed response I had to work .

Have a look in h & m. Just bought two lovely dresses and a jumpsuit that would fit the bill.

If I was your size ( sadly i’m low to the ground ) I would be straight onto Anthropology.

Mint velvet may have something I love their stuff!!

Would you wear a maxi skirt and a beaded top?
uk.monsoon.co.uk/view/searches#?q=Maxi%20skirt

Or anything floaty and beautiful from needle and thread is always pretty and comfortable to wear.
www.asos.com/women/a-to-z-of-brands/needle-thread/cat/?cid=17175

I don't get this whole thing of having a theme that includes guests -

I feel so old

www.phase-eight.com/fcp/product/phase-eight/all-dresses/serefina-abstract-dress/206654466
I tried this on and it was very flattering to my G cup bust.

www.folkster.com/products/lorena-dress-lux-jade

How about this?

https://www.anthropologie.com/en-gb/shop/farm-rio-kiera-maxi-dress?category=dress-shop&color=069&type=REGULAR

Pair with these - super simple & chic (at least I hope so - I just bought them! )

https://www.ancient-greek-sandals.com/mobile/en/eur/product/1134770/Women/Taygete/?ColorAttr=15448&ShowAll=1

Wow! Thank you all for all the suggestions and links. I'm trying to take some time off to go to the city and do a serious day of shopping and trying on. Think that's easier than buying online due to my proportions.
Thank you all so much . X