i'm not good with measurements either. going from your big bust, larger hips and small waist, it sounds like an hourglass like papa said.
but your measurements are 34-27-39 so you sound like a pear.
can you show a picture?
are your legs shorter, do you have a longer torso? are your thighs more heavy and your upper body more slim?= pear
this might sound lame

but right now i'm waiting for trinny and susannah's new book called The Body Shape Bible- can't wait! Apparently they've surveyed a lot of women and come up with 12 different body shapes like the 'skittle' or the 'cone' and the 'brick' etc. Maybe if you have access to that (sneak a peak at the bookshop) you can take a flick through.