grin from ear to ear
To have a broad, enthusiastic smile. Tim was grinning from ear to ear when his bosses praised him during the ceremony. The kids ran around the beach in a happy frenzy, both of them grinning from ear to ear.
grin from ear to ear
Fig. to smile a very wide, beaming smile. She was grinning from ear to ear as she accepted the prize. We knew Timmy was happy because he was grinning from ear to ear.
beam/grin/smile from ear to ˈear
be smiling, etc. a lot because you are very pleased about something: I like your graduation photo, with you grinning from ear to ear and your parents looking so proud.