I think not every girl can look pretty, as with not every guy can look handsome too. Like someone mentioned 'neat', the keyword is 'presentable'. Every girl wants to be pretty, but if you realize that you can't achieve it (yet), the least you could do is to look presentable. Being presentable means you care about how you wear your clothes and the condition of your clothes. Same goes for accessories and shoes. Pay attention to your physical appearance especially the obvious parts like hair and face. Hairs should not have open-ends, and look healthy and neat. Take care of excess oil on face and don't put on heavy makeups except for occasions like grand-scale dinner. Choose and consider what you eat, don't be a pig and eat everything you like. Eat for health. Walk with a confident posture, smile at the right time. You'll look presentable. Of everything I said, take note that it doesn't have to be expensive to look presentable.

True enough.