Sippy cups are a good idea, as are the cups with straws. Not the crazy $15 ones , but the simple ones from Safeway/Coles that are about $3 (clear cups with removable flat lids). Then when you're ready you can remove the lids and Kailie can use them as normal cups.

If you're going to go cold turkey then you mustn't revert back to using the bottles...bit like tt, you can't go back to nappies once they're in undies! You'll probably find she'll kick up a stink for a day or so but just remove all evidence of bottles and she should soon enjoy the straw cups/sippy cups.

Just saw the date of your post. Have you tried yet?