If you are looking to create your own "teens" Colorcurvature's Mixer Script gives you the ability to create your own "aged" figures.  Once you use the mixer script, you can dial in the "age/size" you want by simply spinning one dial. 

You only need an "adult" and a "child" figure to mix them together and get a dial which gives you the ability to dial in what you want.

Here's I've used Dawn and Baby Luna to get a "teen Dawn."  The advantage is that all the textures and clothing fit the new figure from the original figure, by simply using Poser's Use Scale/Morphs, etc. on the parameters panel.

http://www.renderosity.com/mod/bcs/cols-m4k4-mixer/98820/

Thank you for posting this and for the info on this wonderful tool! It is something that will be a huge help with projects that require youngsters! 

Cheers!