Lyrra has a set of magnets to make clothes fit the muscle and creature expansion sets at Daz (the magnets are easy to turn into proper morphs on the clothing items) : http://www.daz3d.com/i.x/shop/itemdetails/-/?item=5474 

she also has a set for the original V4 morphs at: http://www.daz3d.com/i.x/shop/itemdetails/-/?item=4895  I've found both sets very useful.

...and there are many clothing items that I simply wouldn't have got if these sets weren't available...