well when i was playing sims 3, i made my sim become a maid and then they unlocked the maid outfit and hair. [it works for most careers]
but if you cant be bothered doing that, there is a cheat.
cheat: unlockoutfits on
that cheat unlocks all hair and outfits
Chat with our AI personalities
You can unlock Mama Hogg's and Ava Cadavra's.
You cant BE a maid, but you can hire a maid. If you use the unlock outfits cheat, you can dress up your sim as a maid. (NOTE this may change when sims 3 ambitions comes out)
You buy it on the website
To unlock cars on the Sims 2, you'll need Sims 2 Nightlife.
what is the code for lalaloopsy to unlock new outfits