At that moment there was a diversion in the form of a small, redheaded figure in a long nightdress, who appeared in the kitchen, gave a small squeal, and ran out again.
“Ginny,” said Ron in an undertone to Harry. “My sister. She’s been talking about you all summer.”
“Yeah, she’ll be wanting your autograph, Harry,” Fred said with a grin.

Harry Potter and the Chamber of Secrets - Chapter 3 : The Burrow
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