We probably have the same issue with clothes altho since I've been cycling for almost 5 yrs now and lost about 25 lbs, regular size clothing hasn't been an issue for me. Where I get into to a problem is with women's cycling clothes. Knickers and tights are too short most of the time in the size I should wear so I have to get a larger size for the length, and jerseys aren't usually long enough. For jerseys I often get a men's size as it fits better in the torso area and arm length as well.
Bike Goddess, I have the same issue with tights and jerseys. Though I have that issue with a lot of clothes, not just cycling. I was this height in the 6th grade with 10 feet, I thought I was going to be 7 feet tall before I was done

Great Job on losing the weight, I'm hoping to lose about 15 lbs so hopefully cycling will work its magic for me