1. Busty but have no hips?
you'd need to have an open neckline (as much as possible) but important to have a dress that is wider than your shoulders on the bottom. This will make you less busy and not so top heavy
2. Small on top and have no hips go for a fitted trumpet dress to create hips. This will elongate and balance everything.
3. Having the right bra is one of the most important things when making a wedding dress made to measure. It changes everything. So you'd need to get a good bra that suits you perfectly, and you have to wear the same one from the beginning of the design process