There are schools that teach the basics of designing clothing and then allow you to specialize. These schools include the Fashion Institute of Technology and Parsons School of Design.
Miley's Boutique can be found on the SL Marketplace. These are clothes designed by Second Life resident Miley Tryce
you can buy clothes and accessories at the pawfect colour boutique (to find it look on your map) or if you have store credits you can buy them at bearville outfitters
fInd someone who know aramIc to teach us
you have to help and find the right clothes for 1000 people so it will take a while love Kimberly
Beautiful Baby Boutique website offers many name brand clothes and shoes at very reasonable prices. They also sell nursery items as well. They appear to be a one stop shop for baby needs.
Important question: are you male or female?
Study it, practice it, or find someone to teach you. Or all of those.
You can find information, if Gap sells maternity clothes by looking on their internet site, they will have a range of clothes for sale in all shapes and sizes for women.
Here you can find Minnesota wholesalers and manufacturers for boutique clothing: http://minnesota.uscity.net/Clothing_Manufacturers/ Also I found this boutique clothing wholesaler, they offer free shipping on orders over $ 1500 www.clothingisland.com
Phone the body piercing studios in Seattle and ask.
You can find them in Bab's Boutique
The best way is to find someone to teach you and then to practice what you have learned.