The Speaker of "Upon Julia's Clothes" is stunned by the beauty of Julia's clothes, or at least by his perception of that beauty. He describes her clothes with phrases that strongly suggest some type of amazement or sense of awe about Julia and her awesome outfit. Indeed, by the end of the poem he is taken; he's quite literally in awe of all that glitter.
This guy is not in awe of Julia at all, just the illusion she manages to create with her beautiful clothing.
At the end of the poem, the speaker is not in awe of Julia, but rather of her ability to make him swoon.