The peardrop style breast forms are very similar to the teardrop style forms, but they come to more of a point at the top and are wider and flatter than other breast form styles. This makes them best suited to a 40" band upwards, for those wanting to achieve up to a C cup result. Unlike some of the other styles, the peardrop style breast form doesn't offer as much depth and is a little more subtle.
If you're looking to achieve more depth and definition, you'd be better off checking other styles. Listings include plenty of information, including the dimentions, so use this to compare with your bra to get the best results.