Texas Longhorns merchandise such as Longhorns vs. Oklahoma apparels can be bought from various sports shops like: Football fanatics, Bizrate, Amazon, FansEdge, eCrater, Teenormous, South of the Red, Campus Traditions USA, and Yahoo sports shop.Football sports aficionados find it overwhelming to collect items from their favorite teams like the Texas Longhorns. To get more souvenirs, here are some of the stores selling sports apparels and memorabilia namely:Football fanaticsFor only $18.95 per shirt, here is an Oklahoma Sooners vs. Texas Longhorns White 2009 Red River Rivalry T-shirt at Football fanatics. Sizes available are large, extra large and double extra large with screen print graphics of the team's respective helmets. This is an authentic shirt made of 100% preshrunk cotton, an American fabric. It comes in white color with a rib-knit collar.BizrateYou can find a list of stores such as Amazon and football fanatics selling various apparels like Oklahoma Sooners vs. Texas Longhorns, Nike, Oklahoma Sooners vs. Crimson Red River, and more. Bizrate is a place where you can shop items in a convenient way because they are categorized according to brand, price, and stores.AmazonDepending on the size, their Oklahoma vs. Longhorns apparel is priced from $18.95-$20.95 per piece. This is a lightweight ribbed shirt whose available sizes are medium, large, extra large, and double extra large. Kindly check for sizes prior to ordering since they have limited stocks left.FansEdgeAlthough not an apparel, here are some merchandise that has something to do with the rivalry between Oklahoma and Longhorns namely: rivalry flag, plank wood sign, and banner. These are just suggestions I find worthy collecting.eCraterA Texas Longhorns "I Hate Oklahoma T-Shirt" is for sale at eCrater for only $12.95. The prints are found in front only, leaving the back side bare and simple. It is made of 50% cotton and 50% polyester, which comes in burnt orange color at size 3X. This is a limited edition of apparel especially made for Texas team supporters.TeenormousFeaturing the Oklahoma vs. Longhorns white short-sleeve T-shirt at $18.95 only. This is an inspired piece of token during the memorable game between the two great title holders in the field of football sports. Check out this site for availability of sizes.South of the RedA special edition of Texas Longhorns apparel is the "University of Texas Longhorns - Oklahoma Degree T-shirt". This is for the Longhorns fans who want to create commotion by wearing one during the game. It has only one color available, Burnt orange with medium and extra large men's sizes only.Campus Traditions USAFeaturing the Texas-Oklahoma Rival Fish men's college shirt in dark ash color. All Rival fish shirts are made from 100% cotton, which make them breathable. The item is on sale for $13.60 with sizes like: S, M, L, XL, 2XL, and 3XL.Yahoo sports shopYou can find rivalry apparels as well as other championships shirts here at Yahoo sports shop. They have Oklahoma vs. Longhorns and Alabama, vs. Texas rivalry shirts of various sizes.