Bum too skinny for potties/loo seats - HELP!

[atlasthebrute]

Want to really give potty training a good go with my 2-yo DS. The trouble is, she's so skinny and just can't get comfy on any potty we've tried. The kiddy loo seats tend to be a bit better, but she is still very uncomfortable on it. The hole just seems to be too big somehow! Can anyone recommend a good one?

dd is weeny and soon went straight onto the loo - they just perch on the seat rim ! ds had a Graco toilet seat which was fine. Both also used a Mothercare potty with no problems.

this one is great with handles on so they feel safer too.
this

DT1 is a wee thing and she always managed.

My dd like using a potty chair better as it was a lot steadier. We got a pooh bear one from mother care.