Valentine’s Day is right around the corner, and the last thing on my mind is lingerie. Nothing says sexy like elastic-waist maternity pants, right? Suddenly, my clothes don’t fit like they used to… especially the bras. For those like me, who could use a little help in the world of, ahem, undergarments, Katherine Bice, owner of La Lingerie boutique in Madison, has a lot to say on the topic: Lingerie is the hardest piece of clothing to fit. ”I am 34 what?” “This C cup doesn’t fit like the other bra. What do I do now?” According to Tracy M. Pfeifer, M.D., a board-certified plastic surgeon in New York City,…