Ugh. This is a nightmare!

E (27 months) has been sleeping through the night for two months now! Hurrah! Only.... she's not sleeping through any more because she has a new party trick which results in her being wet and cold at 3am (and me having to change the bed every night).

She has always been a sod to get to sleep. Read: 2 hrs of screaming every night. You might recall a rather desperate post on here around her 2nd birthday when sleep training just wasn't working. Well what worked eventually was putting her in her big girl room with full access to her books and toys. She plays, she reads, she tries to get our attention but usually falls asleep within the hour. Until she found a foolproof way to get us to come in to her.....

..... She takes off her pj bottoms then takes off her nappy. It is annoying if you notice but if you don't, and she wets the bed, its a big deal. We always check her before we go to bed but now she has started doing it in the middle of the night, too (nappy on at 10pm, bed wet by 3am). Its happening every night and driving us crazy!

Things we have tried:

- all in one sleepers. She can get them off in seconds - the popper and zip varieties.

- pull up on at night. Super Nanny said they were harder to get off and, no, she didn't take her nappy off that night but it was less absorbent and E leaked in the night.

- putting the nappy on backwards. I saw this on Netmums when j Googled and tried it last night but she got it off anyway.

- talking to E. She thinks its hilarious, especially when she wets the bed it would appear.

Any ideas?