I'd say rectangle, at this stage. It's hard to give an exact answer, though, because part of body type is bone structure, and part of it is where your fat is distributed. At 48kg, you don't have much fat to distribute. Besides that, most people will fit somewhere between the various defined body types, just as most singers have a voice that's somewhere between dramatic bass and lyrical soprano, rather than fitting neatly into one classification.
The size of your hips, as is, is due to the size of your pelvis. Without surgery (which I don't recommend), you can't make your hips much thinner, although unless you're planning on getting a sex-change I don't see why you would want thinner hips -- broad hips contribute to the pear/hourglass figure that makes women look good.
Anyway, looking at your photos, there's not much muscle mass anywhere, and you'd benefit visually from having some more muscle everywhere. So a generic full-body program will probably be a fine place to start, and once you've made some progress and have seen how your muscles respond to training (and have learned how to contruct a program that doesn't put you at risk of creating muscle imbalances), then you can start playing around with the finer details.
I want to know my type of body ..i have 160 cm and 48 kg. 
