The Increase in Body Size
Interpreters mention that seeing an increase in body size without harm may indicate an increase in blessings. It is also said that body hair growth for a man might refer to his wife's pregnancy, for a distressed person it could mean an increase in their distress, and for a joyful person an increase in their joy and wealth, while its loss might indicate the disappearance of wealth.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam