I went ahead and did this next because there are a lot of amazing outfits that fit under this category, which is why there is a lot. And to think they're for the girls. 

1. 

2.

Maybe a little less puffy? 

3. 

Sorry there are two versions, I downloaded these straight from Pinterest. 

4. 

5. 

Imagine it longer, like floor-length.

6. 

Longer and snowflake pattern? This would be good for Pisces since she's ice and frost and stuff. 

7. 

It reminds a lot of Cinderella, that's for sure...

8. 

Not sure if I like it that much, but whatever. It's got the right vibe. 

9. 

Another good one for Pisces, what with the frost thing. 

Should Cancer have a red/peach kind of dress since she's the crab? What do you think?