What does your bub wear under a sleeping bag?

[Marley&Me]

DD has been in sleeping bags for a while now and with winter coming up I'm interested to see what clothes everyone else is using with a sleeping bag. At the moment I am using a 1 tog bag with a singlet and a cotton growsuit. And this is with a room temp of around 18-21. I am planning on switching to a 2.5 tog as winter nears and using a thicker terry towelling style growsuit and singlet. In winter the overnight low here can get to 2 degrees, but is usually around 3-6 and the nursery temp a few degrees higher.
So what do you use?

I have also read to put blankets as well as a sleeping bag. Does anyone do this? Do they just get kicked off during the night?

And another thing, all the guides suggest growsuit etc with a pyjama top or pyjamas. Isn't 9 months a bit young to have pyjamas? I don't have any for her. In fact, I don't think I have even seen pyjamas in a OO or even O!