Won't drink milk from a sippy cup!

My daughter will be one on the 8th so we are trying to transition the milk from the bottle to the sippy. She has been drinking water and juice (sometimes) from a sippy cup since 6 months but if I try to put milk in a sippy she throws it and freaks out. Her bottles are all milk now and she drinks them fine. I want to get rid of the bottle at 1. I don't know what to do at this point. Anyone else having this problem? Should I buy a specific sippy that is just for milk that is different then her other ones? Any advise would be greatly appreciated!