There really is a holiday for everything these days ... and since it's National Fast Food Day, it seemed like a good time to get you clued in on which celebs can't get enough of the stuff! Of course, not all fast food is made the same ... and we think stars like Jelly Roll and Lainey Wilson like their comfort grub deep-fried and served with special sauce! There's always room for the classics, though, and even though Olivia Rodrigo went for a combo at In-N-Out, Kylie Jenner got her burger