Found some codes I dont really care much for these items so here

Enter this code: DXFFJ-7F%P9-CMMXT-DP*RT-Q9MP# for a male T-Shirt
Enter this code: VTY46-*%MHY-MVYRR-DGMFY-YKKP# for a female T-Shirt
3GKCM-V2VJW-2K*WY-DKHPV-96T%#

Same symbol mean same letter

Hints:
#= Type of movies George A. Romero is Known for

%=The type of radiation Bruce Banner was exposed to which was _amma Radiation

*= you will have to guess