Here are two more types of bra shapes:
what it is: A lightweight, underwire bra; made for comfortable wear under T-shirts and casual clothes
fit tips: Seamless, stretch cups hug the breasts. Adjustable straps improve control; styles with printed-on labels nix scratchy tags.
example: Barely There Comfortable Curves Stretch Foam Hidden Underwire Bra http://www.inthemoodintimates.com/intimate-apparel/4364.html
what it is: Low-cut or scooped out in back, with convertible straps
fit tips: The support with this bra centers on the waist; straps are available but not necessary. Make sure you can bend over, twist around, and easily raise your arms.
example: Carnival Bridal Splendor in Satin Low Plunge Longline Bra http://www.inthemoodintimates.com/intimate-apparel/203.html