Iron a crunchy jacket

Daily_Doodler

Hi Folks
A friend helped out with some modelling on a Michael 4 clothing .obj that works well on genesis figures.
Its only small change (to the lapels) but the finished .obj imports to DazStudio without any smoothness - ie. we can see the mesh very clearly compared to the original .obj.
Could you please suggest how we can make our revised model look as smooth as it did before the tweaks?

Richard Haseltine

Are you sure it's still one piece, not split into separate faces? What happens if you go to Edit>Object>Geometry>Convert to SubD?