How to get her to use a sippy cup

My LO is 1 and she refuses to use a sippy cup. Has never wanted to use one. Can’t drink out a straw if it doesn’t have a bottle nipple she won’t touch it. How do I break her from the bottle if she won’t drink out of a sippy? She likes to drink out of a regular cup, but I can’t just let her walk around with a regular cup