I'll have to have a look around & see what I can find. Til then I'll put the onsie on with a tight jumper or shirt. Though she's a little houdini... got her jumper over her head in the car seat yesterday... but got stuck like that
She does zippers & studs, but I do have a couple without feet in them, so will try them backwards. They're pretty thin though, so not gonna help much with warmth, but better than nothing.
The sooner I can convince her to sleep in her own bed the better! (All night would be even more fantabulous!)