Between shows, presentations, appointments, parties and the logistics of getting to all of them, it's a grueling schedule and every fashionista has his or her own way of coping with it.
Elle Magazine's Creative Director, Joe Zee, is all about fueling up on McDonald's.
"Fashion week is my excuse for eating it every day," he admitted to StyleList, citing the close proximity to his office. "I can't help it -- it's downstairs."
Zee is looking forward to the Marc Jacobs show, particularly since he's been following Marc Jacobs President Robert Duffy on Twitter.
"He's the one surprising, unpredictable designer, but he's always on the mark. I saw them working on the collection today on Robert Duffy's Twitter. I don't think fashion can get any more insider than right now than if John Galliano Tweeted from inside his apartment," he added.
"I want to wear the designer whose show it is, so that means making some wardrobe changes throughout the day. I'm just now starting to get the clothes sent in and going to some showrooms. I do it all myself so it's hard and chaotic," she admitted to StyleList.
"I love Hervé Léger, Carolina Herrera, Michael Kors, Oscar de la Renta -- I love them all."
And her secret to getting through the week?
"Coffee. It's coffee and generally not eating too much because when I eat, I get more tired," she told us, reiterating the point. "I drink a lot of coffee and keep moving. You can rest afterward."
For more fashion week scoop, see who's not so welcome at the shows.