Losing inches

Hi! I'd like some advice on how to best go about losing a few pounds/inches please!
I'm currently 5'7" (ish, 6 and 3/4 if we're getting technical), and weigh 127 lbs, size 2/4 in jeans. I just wondered if anyone had any tips on how to get back to a 0/00, exercise/nutrition wise? I've been working out and eating generally clean for a while, but it's just really hard to get back to being that small again. Any help would be much appreciated

(It's not so much about being a 'size 0', as it is the fact that i've literally invested thousands into my closet and I can't wear 80% of it right now - especially jeans, and also i really really love my clothes :P )