Do you have a picture of the outfit?  I'm not familiar with the Poserstyle site, so I think that it might have been before my time in Poser.  But a picture or a description of it might help.

Also, if you don't mind working with Dynamic clothing, there are lots of older style clothing at Poser Fashion at this link:

http://www.poserfashion.net/

If you are unsure about how to use Dynamic Clothing, there are tutorials right at the site. Click the link just above the image before you download it, and it will take you to a tutorial on how to work with that dress in the cloth room.

PhilC has a video on how to use the cloth room too if you need extra help. You even get to hear his sexy voice!:

http://www.philc.net/CC_sampleVideo.htm

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi