Girl, if I had your measurements I'd think I died and went to heaven. I am currently 5'5" with measurements of 40-33-37. And I weigh 155. Good job on losing weight (50 lbs!?!?) That's an incredible achievement! However, don't let yourself become too obsessed with losing "just 5 more pounds!" because that's how eating disorders start. Try and think more positively about yourself and don't make yourself feel 'guilty' if you slip up on a cupcake every now and then. It sounds like you have a wonderful workout regimine, stick to that. Like aevans410 said, just cutting 500 cals a day will make a big difference. I pretty much considered myself an obsessive eater for the last couple of years. If I was happy- I ate. If I was sad- I ate. If I was stressed, tired, full of energy, nervous, bored or busy I would eat! And usually it was high fat foods from the freezer or the fast food joint. Blech. I've only been "dieting" for 3 weeks and I can't believe the incredible difference in my taste and appetite! It'll be tough the first week or so, but if you make it past that, you'll be great because you won't crave those nasty foods as much! Try eating high fiber snacks or fruit to keep you going between meals. Also try eating a few small healthy meals instead of 3 big ones in a day. It'll keep your metabolism going and you'll actually lose weight by "eating more"! If you skip meals your body will think it's in danger and go in "starvation mode" and slow your metabolism down to a stop.
If you really think you need to lose weight then just try cutting some calories and keep excersizing. If you just want to be healthy (live longer, have a healthy heart, etc) then try really hard for a week to not have any junk food then see how easy it gets after that. Treat yourself every now and then so you don't go crazy. : )
(Non food treats work well too! Massage? Shopping? You bet!)
Good luck!