For the love of Miuccia Prada! Why can’t Hollywood — the supreme arbiter of fakery — just pretend that journalists are well-heeled beauts? Instead, we get frumpy, ink-stained wretches like all-business-no-play Cate Blanchett as the title character in ”Veronica Guerin” and frazzled, oily Hayden Christensen (below) as The New Republic’s Stephen Glass in ”Shattered Glass.” Sure, at most news bureaus sneakers actually outnumber stilettos, but some of us (Yes, us: Celebrity interviewers are journalists! Or at least we think we are…) really do believe that clothes make the man (or woman), and we wonder: Wouldn’t audiences be more apt to feel sympathy for Glass if he changed out of those khakis and washed his hair? (Oh, what the ”Queer Eye” boys could do for him!) Consider this carefully, all ye costume designers. The collective closet — nay, the reputation — of an entire generation of future reporters is at stake.