I started potty training Lydia a little when she was about 18 months, but she didn't get the hang of it at all. She was showing all the signs of being ready but I think she just didn't feel like it.
She was finally day potty trained in Spring this year.
She is now fully potty trained during the day, and also during her nap. (the no nappies at nap time has been for about a month).
We haven't tried her without a nappy at night yet but I think she would be ok, but I'm going to Spain next week so I'm going to wait until we get back to try that.