Pixie evolved after beating Grant's Tyrunt at the Cyllage City Gym.

She is different from other Kirlia in some key ways:
-Half the size of an average Kirlia (she's just shy over 1 foot tall)
-Hair goes all the way around the back of her head as opposed to just at the sides
-Psychic spikes form to appear like a hairband instead of two upward spikes

While being part Psychic and part Fairy type, Pixie more fills the role of Psychic for Fae and her team

Pixie belongs to me
Art was done
Kirlia belong to Pokemon Company/Nintendo/Game Freak/who ever created them