Will my Orpingtons be bantams or LF

what were they sold as? A photo might help us.

Well unless you paid silly money for them (about £50 each) then I'd guess they were bantams, or some form of project.

LF chocolate orps are still a work in progress, and despite the colour not yet being recognised by the PCGB, LF birds go for really silly money.

I'd agree that they are likely to be bantams, but they will grow almost as big as a normal sized hen even so.  The breeder I got my blue orp bantie chick from had chocolate banties and they were buxom girls    LF orps are massive so I think they would be bigger than a foot tall by now and chocolate LF are not that common as the others have said.

This was my blue orp at around 12 weeks - she's with a Serama which is a tiny bantam



This is her full grown with other banties - hope this gives you an idea of eventual size 

They are beautiful, I wonder if they will lay a reasonable size egg with them being larger bantams?

Very nice birds Taliz 

and the eggs are not huge for the size of the bird, but very tasty 

Only one of them had just started laying when I got them.

They haven't laid for me yet but I've only had them three days, I expect there still "emotionally" moving in. 

Looking forward to that first breakfast. 

I wasn't sure either at first, they're big for bantems.   

Great natured tho.
I,ve only had them a week and one of them has learnt to peck the patio door if she wants some attention