Hehe, I was running into the same problem, I was like hmmm... I want a super tall person to stand next to a super short person.

So I morphed and scaled her and she looked great in a bikini, lol... but once I put her clothes on, nothing fit, it was like when I go shopping! Everthing is too short! So I downloaded the Copy Scaling script: http://www.renderosity.com/mod/freestuff/details.php?item_id=50718

and it worked good when the character is not bending their legs, but otherwise it didn't help... So I whipped out my modeling program and made my own leg length, torso length, blah blah morphs and it worked perfectly :)

Hope you like the pic ;)