There IS an entire customizable set for Aspiring Knight. It's a medium class of armor and can be crafted with empty orange shells and level 15 as the base level to equip.
Same name, completely different look. I already stated I meant the outfit that you get from the Tython quests as a Jedi Knight. But to be even more specific: this piece and the rest of the set http://www.torhead.com/item/91OqxQC/...g-knights-vest