Thank you! I never saw the option in CAS, I just clicked on accept when her career outfit was done, cuz she was going to work naked! LOL! Can I undo it? Where is it?
Go back to the mirror to change appearance, go to the hair selection menu, and look at the lock. If the lock is closed, the selected hair style will be used for all outfits. If the lock is open, then you can select individual hair styles for each outfit. Make sure the lock is closed, then change your hair style back to what you had before. Once you do that, click the lock to open it, and select the hair you want for your career outfit.
If you do need to use the Edit in CAS cheat in the future, here's how.
Open the cheat console and type in "testingcheatsenabled true" (without quotes) Once testingcheats are active, shift-click your Sim and select the option "Edit in CAS" This will let you completely change a Sim's appearance.