lost the keys to my car. how do i get a new one? 1988 Chevrolet Celebrity

you have two options available to you i know because i have done this as well
1. you can get a lock smith you cut you new keys for your car it costs about 40.00 depending on the lock smith
2. you can call your gm dealer give them the serial number and they can get you new keys however you will have to take proof of owner ship to them before they will order it for you
if the car is locked a lock smith can open it for you as well
they usually carry a master set of keys
in a case
i have one of these being that i am a mechanic but now they are only available for certified lock smiths
if that helps