Slide and clone complete edge loops and keep things curvy:

With the Slide tool in CINEMA 4D R15 you can adjust multiple edges, and complete edge loops, with a single drag. Adjust the slide with interactive viewport handles or specify a slide distance based on a fixed value or a proportional offset from the surrounding loops.

Loading more stuff…

Hmm…it looks like things are taking a while to load. Try again?

Loading videos…