Try the latest perfume sample vials by Katy Perry for free! Vial is a sample perfume provided perfume’s designer to promote their fragrances. Quantity of perfume is about 1-2ml only. You can try the perfume and if the perfume suit you, that you can decide to buy full size perfume. Other benefits – can bring along in your handbag or put in your pocket to make sure you smell great all days long.