THIS VIDEO CONTAINS NUDITY!
Please leave now if you are underage or nudity offends you. Thanks.
In this tutorial I convert an outfit from Caliente's Vanilla Outfits to support BBP, using the new BodySlide2 and Outfit Studio by Caliente. Note that this outfit (and many more) are now available for download in my Omnisway Clothing Replacer (OCR) mod, available here: http://www.nexusmods.com/skyrim/mods/...
Bodyslide2 / Outfit Studio:
http://www.nexusmods.com/skyrim/mods/...
Caliente's Vanilla Outfits for CBBE:
http://www.nexusmods.com/skyrim/mods/...
UPDATE: User lordescobar666 on BodySlide2's has discovered the cause of the squashed breast issue seen in my tutorial. He has a fix available here: http://www.wavion.info/nexus/bs2-t-bb...
It works for BBP and TBBP as both are supported by the XPMS skeleton.
ADDENDUM: In the tutorial, I select the outfit and use the "Copy Bone Weights" command, which copies all of the bone weights from the BBP body to the outfit. If your outfit closely adheres to the body shape, this is fine. However, it might be better (especially with dresses) to instead keep the outfits original weighting and only copy over the breast weights from the body. To do this, DO NOT use the "Copy Bone Weights" command; instead go to the bones list, select only the two breast bones (use Ctrl key to select multiple) and then choose "Copy Selected Weights" from the Shape menu. This will keep most of your outfits original weighting and simply add the new BBP weights.
TIP: I want to point out that this is a very simple conversion that directly copies BBP weights from the reference body. You can achieve even better results by doing a little extra weight painting in Outfit Studio (after you've copied the base weights). For each breast weighting, try extending the weight paint (not too heavy!) across the middle cloth a little onto the opposite breast. Also remove weighting from any rigid parts of the outfit (like a leather corset below the cloth). This will help things move a bit more realistically for clothing. If you don't like the results of your painting, you can always reload your slider set and recopy the bone weights from the reference body.
TIP2: After following the steps in the tutorial and tweaking the weight painting, I also suggest editing the following sliders in Outfit Studio: Breasts, BreastsSmall and BreastFlatness. When you push the pencil icon next to each of these sliders, they should move all the way to the light version; look at your outfit mesh and check for weirdness between the the breasts and smooth over accordingly with the available tools. This should clothing that looks better on your light-weight characters.
Note: I have well over a hundred mods installed, so in all likelihood, I won't be able to answer questions like, "Hey how do I get my game to look like that?" or "What mod is that?" Sorry.