The geometry for nipples is there, they just aren't pronounced in the default shape. 

The chest is a bit strange for default, but there are morphs to flatten them out and raise the pecs. 

For those who were complaining earlier about the 8-heads tall measurements, Dusk is actually 7.5 heads tall - the average realistic human proportions - not the idealistic 8. He's larger than the older Poser figures, but I suspect that has something to do with his cross-platform design. He's the same height as G2M and those figures are about 20% larger than Poser figures.