The Poser 7 figures SydneyG2 and SimonG2 do have full body morphs to make them larger. The morph called Endomorph makes them larger. It's the naked figures that have the morphs, and the clothes that come with Poser 7 also have the morphs in them, but you will have to apply them yourself. However, I wouldn't say the morphs are brilliant.
Here's a quick pic of SimonG2 and SydneyG2 with the endomorph set at 1.