Putting on weight in a dream is read in two ways: as abundance and growth, or as carrying more — worries, duties or feelings — than you would like. Feeling comfortable with the weight points to security and contentment, while distress suggests self-consciousness or a sense of being weighed down. Seeing someone else gain weight may reflect concern for them, or a sense that they are prospering. Clothes that no longer fit are read as outgrowing an old role. The image is about load and plenty, not the body.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.