Help me find a nice white slip dress/long strappy vest

[MicroPigInHighHeels]

To wear under a very nice but light coloured and therefore see through summer shirt style dress.
I like this but it is very £££
www.puremarie.co.uk/lingerie/chemises-and-camisoles/By-Ti-Mo-Tees-Slip-Dress-White
I like this but it seems to be only in Black
www.thewhitecompany.com/clothing/dresses-and-tunics/reversible-slip--black/
Thanks in advance.

River Island do long tanks. wider straps though. £6. cotton.

Good old Marks?

Me and Em do some good quality long vests. They wash really well but they are a little expensive.