Hi , Ive been told that doing Body Pump classes will help me lose weight? Im a little unsure because I dont want to bulk up with muscle. Im not overweight ( 175cm and 59 kg) but I would like to tone around my thighs, bum and hips. Apparently Pumo is THE thing to do- any feedback??

I don't think Pump Classes alone will help you lose weight. I do them and have never lost weight. It was only when I added cardio as well that I lost any weight.
They wont make you bulk up either. To bulk up you do a few reps of really heavy weights. Pump is designed to help you tone up, it's light weighs with many reps.
It's a great class for toning up, I agree. But if you're after weight loss you need cardio! :)