Please don't order lilies for your friends and lovers if they have a cat. Really... a gift of flowers for a cat owner is... I won't say it's *always* a bad idea, but consider if the cat owner has any house plants.
If they have no house plants there is a *reason* for that. It's called: The Cat. You can have house plants OR a cat but not both. Cats chew on plants, and they will chew on lilies and get sick and possibly die. No, they don't know not to eat these plants. They dig right in.