Hi Liese,
When I lost a ton of weight due to my ED I bought new clothes constantly (new for me anyway, I usually shop at consignment or second hand stores). It still causes an issue in therapy sometimes, just out of my own self consciousness, because things won't sit right and it bugs me and I don't want to buy too many clothes that fit for when I'm healthy again. Anyway, I'm very body conscious but don't have a therapy uniform. At first, I made an effort (did my nails and such) but at this point I've worn anything from what I slept in the night before, to yoga clothes (my staple but because I actually go to yoga before or after session too), or jeans and whatever T-shirt is clean.
Some types of clothes trigger me to wear (like baggy pants/jeans even just 1 size too big), and anything low cut with cleavage... not because I worry about T but because... I just don't.
Sometimes I worry my Ts think I dress provocatively and not necessarily for them but because I want attention or something? I, like TN, tend to wear bright colors because I love them and it's the colors I use in my art also. I can't wear earth tones because I look washed out, and I hate white. So that leaves black and then anything goes. Today I wore a bright orange shirt that had a bright yellow tiger shape on it, yoga pants, and sandals. I get my hair done today and intend to wear jeans and the same shirt. Right now I'm in my house clothes. I do not wear the same clothes out as I do in my house most of the time. I change 3-4 times a day lol.
Anyway, I feel like I'm way off topic, but my point is... I agree with TN, dress how you like and what makes you happy and feel good. It's good to be concerned, but also respect yourself and your own unique style. I think if T had an issue he'd say something, I know my T would... and truthfully I don't think most men even care what we're wearing. I get noticed (in a positive way) the most when I'm in the worst possible thing I could imagine wearing in public (usually late night McDonalds ice-cream cone runs, or coffee after an all-night of studying) and my hair is all greasy and unkempt. If I look at all like I gave even the SLIGHTEST damn... no one notices lol. I don't even wear make-up anymore because I've been on a new diet so my skin is nice. Not even eye make up (which I used to coordinate w/ what I was wearing... so, also bright... also got compliments but just don't have the heart anymore).
UGH... so much rambling. As long as it's for you and makes you feel good - do it.
It's also okay to address with your T - that you're excited you have a new wardrobe, and it's weird to wear to therapy. Whenever I wear a skirt or long dress I feel weird and will talk to my Ts about it... usually the conversation starts with "I feel weird in this get up because I haven't done laundry in 2 weeks" which is the truth... and they'll say whatever it is is nice.
Okay, I hope this helped somehow...