one year old won't drink milk from her sippie cup

Is anyone else's one year old really picky about getting milk from a bottle versus a sippie cup? My babe will drink water from her sippie, but if I put milk in it she throws a fit. I swap it out for a bottle and she grabs it from me! Any tips for getting her used to milk from a sippie cup? Obviously, as she gets older she should be drinking more from a cup but she is being a little diva haha.