Although there are some deformation features in SW which can be useful, there is no core subdiv modelling functionality similar to Creo Freeform or Style Surface Edit.
There are however a couple of plugins;
Power Surfacing for Solidworks by nPower Software
Autodesk tsElements Plug-in enables you to import concept models and surface designs from Autodesk T-Splines Plug-in for Rhino directly into SolidWorks
Be ready to have deep pockets!