Elyn said:
I've found a few super-cute maxi-dresses with similar cuts at Go Jane http://www.gojane.com & Forever 21 http://www.forever21.com that are waaaaay cheaper.  The only problem (for me) is that I wanted the dress in yellow & they don't have it, but if you're not wed to the color &/or like prints these 2 stores offer some really great options (some as low as $25)!!!

Elyn said:

Based on extensive personal research ... a great way to wear the dress & a proper bra, is to wear a white tank or baby tee underneath. Usually I like tanks under sundresses (for reference pics Eva L-Parker has been doing it all summer), but on a dress like this a baby tee with tight-cap-sleeves looks cuter & like youre making an 'outfit' rather than just trying to cover/hide somehing! The thing about the baby-tee is to get a really super-soft cotton one that is whisper thin, anything too thick can look lumpy & be uncomfortable & jersey is too clingy & looks a bit too "friendly".