One of our favorite pastimes is looking at what the biggest celebrities are wearing, applying and using daily. . . and then adding those exact products to our cart. The only issue? Sometimes those cool-girl items can cost a pretty penny, aka they’re totally out of our budget. That’s why we’re fully taking advantage of Amazon’s Prime Big Deal Days event, which has so many star-studded deals on fashion pieces, beauty buys and more at a major discount. Amazon’s Fall Prime Day, which will take place on October 6 and 7, is already dropping big savings on celeb-loved fashion and wow-worthy beauty de...