Dress for hot destination - 16/18

[DelphiniumBlue]

I'm looking for a day dress that will look slightly glamorous but still suitable for beach resort, not polyester or spaghetti straps/bandeau top, not too clingy but not a tent either! Needs to be knee length or longer . Can't find anything I like in my usual suppliers eg Boden, White Stuff. Don't really know where else to look - have drawn a blank!
Would also like a chambray button through long shirt/dress, and a pretty, flowy, top at least hip length to go with white trousers and jeans. Or anything pretty really - feel the urge to do holiday shopping but just don't know where to look!
I have Winter colouring, look dreadful in beige, cream, peach and most pastels etc,and like strong blues and pinks, and floral patterns. Not keen on stripes, tribal designs etc.
Has any one got any ideas on where to look? Can be online or a London shop.
Thanks.

Not sure about the cotton traders dress, but they do have a nice chambray shirt+ thanks!

Toast?

I'm the same size and height as you and Toast usually do well.

Someone linked to Adina on a summer dress thread - for anyone watching this one, they have some very nice patterned dresses and tops. Has anyone tried them? Wondering what their sizing is like.

Adina ...hmmm
their garments look lovely in photos but when they arrive they aren't too special on quality. I had to send most of it back.

Thanks Nanny. They're not that cheap either, so would expect decent quality.