Olivia stopped hers on her 2nd birthday........I wanted her bottles to pass onto Charlie, and her consumption of milk from a cup and other calcium was high, so we made a big performance of "throwing all the bottles into the bin for the bin men" and she was on a cup from that point on........

(Needless to day, I retireved the bottles from the bin and washed them all when she wasn't looking and we then used them for Charlie from a few weeks later!)