Jensen bought the shirts they were wearing before Jared got there. Jared was fascinated and slightly confused by his.
EDIT: I can’t believe I missed the part where Jensen said the fins were for Jared’s giant back muscles. Bless @jrodackles_ on twitter for catching it.
Tag: for the edit
Jensen and Jared whispering in the VIP area at the Orion when everyone was trying to convince Jared to get up and sing. Look at Jared’s smile at the end. (JIB8)
EDIT: From another angle (X)
nothingidputbeforeyou 