Hello Kenise, we are afraid this costume can not custom size, but we have another one which can make custom size for you. Here is the link:
http://www.cosplayfu.com/product/Aizen+Sousuke+Cosplay+Costume+from+Bleach please simply select the 'custom size' and fill up your exact body size, and our tailor will make your costume size as required. So please don't worry. n_n
*Custom size costume doesn't charge extra cost, but the processing time will be longer than standard size costumes; for this costume in custom size, we need about extra 1-2 weeks to make it (excluding the shipping time).