The Doctor held up her hand and saw the first stages of regeneration taking place. Unlike the harsh yellow light of the mind gem, her skin gave off hints of golden light. It was just the pre-show. The light intensified and then poured out violently out of every cell of her body. It was impossible to make out any details; her hands, head or skin or what she was changing into underneath.
The process was mercifully short; less than a minute.
Instead of a petite brunette girl there was a pale, redheaded girl instead. When she stood it was like watching a baby giraffe trying to walk. She was awkward and gangly, and a good half foot taller than her former self. Her wrists and legs were too long for the suit she wore.
"Did my clothes shrink?" she asked, dazed. "Oh dear, I'm Scottish. I don't like this voice at all. This is a mean voice. Mum yelling to pick up after yourself voice. No worse! Awful ex-girlfriend voice."
The Doctor reached up to touch her own face and looked like she was about to trip over her own feet.