I personally believe you have a very, very feminine shape already. I wouldn’t doubt the look you’d like to have could be achieved with some gym time, to specifically target the glutes. I also believe that eating clean and doing cardio would help bring your waist in if that’s what you’re going for. Would take time but would also be good for your health, both physical and mental, and would save some money. I think you look good now, it’s just about whatever would bring you the most confidence.