In need of a holiday wardrobe

[SilveryMoon]

I'm going on my first abroad holiday in July and need a wardrobe.
I'm in my 30's, am 5'10 and a size 18.
I need the lot, dresses, swimwear, accessories and so on. No idea what or how much to get. We're going for a week.
I think I'll go for swimdresses or costumes with shorts fir the pool, I don't want to be the one with her arse hanging out and I want more coverage than my knickers give me.
Any pointers much appreciated

Highstreet budget ideally.

Go to Sainsburys - there's just loads of maxi dresses and summer stuff you can lounge around the beach in.

I have some lovely costumes from Debenhams which are 50's style with little skirts. They do loads of kaftans etc too.

Simply Be have some lovely swim dresses.

Capsule wardrobe for 2 week holiday abroad. Mine would be.....

Navy linen trousers for sightseeing
4 or 5 bright tshirts to match
Large brimmed hat
Navy sandals/silver sandals for night/ flipflops in day
Cardigan/ wrap for evening
2 shortish dresses
2 maxi dresses
2 swimsuits
2 sarongs
Hairband
Sunglasses

Thanks guys. Will have a look at sainsbury and Debenhams. Didn't even think of sainsburys. I like maxi dresses, just a shame they make me look pregnant and are never long enough.
That list is also very helpful, thank you.