Jeanette Miller was one of the members of the Chipettes and she was Simon Seville's girlfriend/future wife.
Jeanette Miller

In Alvin and the Chipmunks 2: Samurai Rebellion, she begins to fuse with Shining Armor's younger sister Twilight Sparkle (Tara Strong) during her fight with King Candy (Alan Tudyk), hoping to destroy him once and for all.

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