Shabby Apple has some fabulously cute skirts and dresses, and all are completely modest. Some of the items can be a bit pricey, though, so I always look to their sale for something a little closer to what I can afford.
I would say that Down East is very similar to Shabby Apple, so if you need more options, go here!
I like Eshakti because it is pretty unique. It let's you choose the length, sleeve length, and neckline of most of their dresses, so you can take a dress that's immodest and alter it to fit your standards.
Lime Ricki is a good place to find this year's swimsuit! All of their swimsuits manage to be modest while still being extremely cute and flirty.
Anyway, looking at swimsuits inspired me to create some outfits for spring break. Even though it's still five weeks away, and it's -3 outside, there's nothing wrong with dreaming.