Bra shopping doesn't have to be the worst thing on the planet.
Smaller-chested people can get away with wearing bras that are more delicate or unlined; however, it can be tough to find the right cup and band sizes, since they're less common than larger ones. Here are a few good options.
Sheer Unlined Demi Bra
$36 from Timpa in 32A-36C; because it's so low, it still looks sexy without drowning your boobs in fabric.
Source: dollhousebettie.com
Dip-Dyed Bralette
$48 from Nasty Gal in XS - L.
Source: nastygal.com
Little Bra
$64 from Journelle in 28A-36B, intended for especially small frames.
Source: journelle.com