While each product featured is independently selected by our editors, we may include paid promotion. If you buy something through our links, we may earn commission. Read more about our Product Review Guidelines here. Last year, flip-flops might have been the fast and casual shoe you slipped into to pick up your prescription around the block — or perhaps you reserved them for sandy beach days — but Kylie Jenner just made them the star of her Italian summer vacation. The 27-year-old Khy founder and beauty mogul packed a total of three different iterations for her trip, including the TKEES Lily Liners ($60), TKEES Lily PLatforms ($95), and TKEES Lily…