I am afraid you can't...
there's this little paint brush...
you press the clothing
custom sims can be done by using Body shopgo to Start/All programs/your latest Sims 2 game/ Body shopit might take a little while to open but when it does you can create sims.
You can't, it was only possible to create werewolves in the Sims 2.
You can download custom content a lot of places online, such as Mod the Sims. Just create a log-in, go to the "downloads" tab, pick The Sims 2, and start hunting.
I highly doubt this is possible. You can make a 'look-a-like' of something but you cant bring something from the sims 2 into the sims 3.
you create your own sims by using body shop. go to your start menu the All programs/EA Games/The newest Sims 2 Expansion pack that you have in the folder will be a program called Body Shop.
To get custom content sign up to ea. Then go to the exchange, and download other user stuff it's really cool! If you want to create your own custom content, go onto the body shop, create a sim, create a house, or family!
You can download custom hair from the Official Sims 2 Website and Mod the Sims.
You can find custom content on various third-party websites, or by downloading pre-made Sims with custom content from the Sims 3 Exchange.
The only way a sims can change its muscularity in any sims 2 game is if you download skins from custom content sites like ,mod the sims or the sims resource. this is only possible in sims 3 hope i helped