Also, take a glance at the sort of undies she favors.
Is it cotton or silk, plain or lacy? If it is quite plain then she's not likely to like anything with tons of lace and likewise, if it is all lacy layers and ribbons, do not select plain undies. If you know her size then that could be an excellent start but if you don't and you purchase something thats too tiny, though she may feel flattered you believe she is that size it is also embarassing since she'd have to tell you she was bigger. If you purchase something too large she's going to see this as you seeing her bigger than she is and so she'll possibly never talk to you again. Today undies comes in a myriad of colors.
Under-wired bras have a tendency to give a better shape and lift. As you full well know, bras are not inexpensive. New Years resolutions are great ideas, but I must confess Ive failed in meeting a lot of them.