Easy dresses for spring?

[knitknack]

Has anyone come across any 'easy' dresses to throw on over tights or leggings (I know, I know) just to slob around in the house or garden? I'm after a couple - I hate to feel restricted or worried about hem lengths etc when I'll relaxing!

I just ordered this from Asda for the princely sum of £14 - is a bit brighter than I would normally go for but looks ideal for what I'm after...