hmmm. Well I too agree all bottles need to be thrown out, or stored if you're planning to save for the next. Either way involve her in this momentous occasion. Throw a "big girl" party. Maybe a dollar store balloon and noise maker, some kind of special treat (even something little like mini m&m's or a cookie if this isn't an everyday thing in your house) and let her know at her big girl party all the bottles are leaving, because big girls drink from a cup. Involve the siblings, make a big deal about it. 20 minutes tops is all it takes. If you're willing, let her drink from a cup without a lid. She'll need lots of help at first, but sippy's are just for parent convenience, there's nothing that says they have to drink from a cup with a lid, so maybe she just needs to be offered a plastic cup, and told to keep it in the kitchen, or at the table, where if it spills no biggie. Make this into a "big girl" privilege, not a demand.
at 9:37 PM on Feb. 19, 2011