Esport stores

Official Team Apparel and Uniform Shops
ALTERNATE - http://www.alternate.de/html/product/listing.html?navId=15749&tk=13&lk=4985
CompLexity - http://complexity.spreadshirt.com/
Evil Geniuses - http://www.splitreason.com/eg
Fnatic - http://fnatic.com/shop/categories/clothing/
Grubby - http://www.ownaj.com/collections/partners
Incredible Miracle - http://www.googimsmall.com/front/php/newpage.php?code=122
Infinity Seven - http://ggwpapparel.bigcartel.com/product/infinity-seven-team-jersey
Lemondogs - http://www.maxfps.se/product_view.aspx?productid=5131
Lions - http://www.maxfps.se/product_view.aspx?productid=3968
Millenium - http://www.ouikos.com/fr/65-millenium mouz - http://www.gamersware.de/index.php/language/en/cat/c321 (OLD apparel from 5 years ago)
Prime - http://primezzang.net/
Quantic Gaming - http://quantic.spreadshirt.com/
ROOT Gaming - http://root-gaming.com/shopsoon.php (coming soon)
SK Gaming - http://sk.gamersware.de/index.php/cat/c319_SK-Gaming.html
Team Dignitas - http://www.team-dignitas.org/shop/
Team Liquid - http://www.teamliquid.net/store/
Team SCV Life - http://thehandsomenerd.com/
Tyloo - http://tyloogame.taobao.com/ (Site is in Chinese, I am unsure if they ship internationally) vVv Gaming - http://www.vvv-gaming.com/forum/store/

Official League Apparel Shops
ESL - http://www.esl-shop.net/shop/Gaming-Wear/901021/f.html?
IPL - http://splitreason.com/ign
MLG - http://mlgproshop.com/
NASL - Available at event locations only (so far)

General Starcraft/2 Apparel Shops

Blizzard's Official Online Store - http://us.blizzard.com/store/browse.xml?f=c:2
Cynical Brit - http://www.districtlines.com/Total-Halibut
GG WellPlayed - http://ggwpapparel.bigcartel.com/
J!NX - http://www.jinx.com/shop/coll/starcraft/ ownaj - http://www.ownaj.com/collections/all?page=1
RedBubble - http://www.redbubble.com/explore/starcraft
Stimpack Apparel - http://www.stimpack-apparel.com/ thehandsomenerd.com -