South Park: The Stick of Truth - Two Girls, One Stick Achievement

Achievement - Two Girls, One Stick
You defeated Princess Kenny in your girl makeover disguise.
**This is a Missable Achievement **

The disguise is acquired as part of the main story line. Equip all pieces of the disguise (there are 4) before the final fight, and you'll unlock the achievement after the battle is complete.

NOTE that you must remove your extra rings, gloves, facial hair and face paint or the achievement won't count. You must only be wearing the 4 pieces of this disguise.

This should be paired with "Face Hoff" and "Outpatient" to unlock all three achievements simultaneously.