Sterling, I am late to this party, and I have not read any of the replies, except for yours...
Let me start with the hard part - and I am basing this on personal experience: In any worthwhile endeavor we undertake, none of us can rely on other people for balloons and accolades, because usually, we're not going to get them. At least, not in the measure we expected and hoped for. We have to rely on ourselves, for our balloons and accolades. You have done some amazing things, and I know this, because I've gained 15 pounds since 2015, and I've been fighting to lose it pretty much since then. It takes sheer grit, hard work, and bloody-minded stubbornness, and you have all of that in spades. I really and truly hope you realize that you have done something wonderful for yourself!
Give yourself the balloons and accolades, and if someone gives you more of both, that's just more icing roses on your cake
Also... you have to tune out the negative voices around you. That is jealousy. An acting teacher I studied with, once told us, "Jealousy is the fear of being excluded". I would expand on that: it's also the fear of being left behind. I think your friend, who made the negative comment, did so out of fear: you've taken on this long-term task - weight loss/improved health - and so far, you have succeeded! I honestly can't speak for her, but she's probably having to face up to her own shortcomings, and her fears that she is missing out, not measuring up, falling behind on life.
You have to take a deep breath, and choose to disregard her negative comments - and anybody else's for that matter. You cannot control what other people say, but you can control how you react to, and feel about their words, attitudes, actions. You're the captain of your ship, not them.
When you talk about your grief at losing your clothes, I think perhaps it might be this: you've had this series of big life-changes in your weight, and appearance. You found these garments to clothe and armor yourself in, that made you feel amazing, happy, successful and strong. Now those feel-great items are no longer useful. And I think you're worried that you'll gain the weight back, and need these garments again. So... deep breath. Conquer the fear, accept that the work you've done will hold, and trust yourself. The right clothes will come along, but it might take time. Be patient. Wear what you have and love and that fits you beautifully right now. If that means you're washing stuff out in the sink every night, that's fine. I assume it's what most of our great-grandmothers did It's often what I do, these days.
There is one more thing, based on observation and personal experience. I think we all have this tendency to believe "Once I lose this weight.." "Once I've made X amount of money..." "Once I get this promotion..." "Once I get my home decorated perfectly..."
"..then everything will be perfect".
We bank on this future perfection, and it takes us out our present enjoyment of our lives. You were able to enjoy those clothes that are now too big. Gradually make your goodbyes to them, phase them out, enjoy what is left. And smile broadly and enjoy the next step in your wardrobe building, and in your life. You deserve joy <3
And balloons!