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In X-Men: Destiny for the PS3 and Xbox 360, there are some extra costumes for Emma Frost that you can unlock by entering a code on the Start screen.

Xbox 360: At the Start screen, hold LB and RB, then press Up, Down, Right, Left, B, Y
PS3: At the Start screen, hold L1 and R1, then press Up, Down, Right, Left, Circle, Triangle

Check out my other guide for more more unlockable costumes in X-Men: Destiny.