- "Stop slouching!"
- —Loretta telling Rodrick to stop "slouching.".
Loretta Heffley is Greg's great aunt and a minor character in the series. Much to Greg and Rodrick's dismay, she always arrives first at any special occasion or party, and they always fight to see who would greet her first.
- Diary of a Wimpy Kid (online) (First appearance)
- Diary of a Wimpy Kid (First book appearance, indirectly mentioned)
- Diary of a Wimpy Kid: The Ugly Truth
- Diary of a Wimpy Kid: The Long Haul (Mentioned)
- Diary of a Wimpy Kid Do-It-Yourself Book (Also in extended version)
Loretta seems short in the books. But in the online version she was taller than her book appearance. She has short curly hair, always wears a hat, and wears glasses. She wears heels.