noun / verb
smile
SMYLE/smaɪl/
A pleased or friendly expression made with the mouth, or making this expression.
The young woman smiles warmly, her cheeks lifting.

Etymology
Middle English smilen already described a facial expression of amusement or pleasure. It became the ordinary word for this expression, while the older smirk narrowed toward an unpleasant kind of smile.
In context
we all know that we can smile in photos but if you don't want to smile and you want to look like a tough ass hot model here's a few suggestions
More examples
- His nervous smile faded when the interview began.
- She smiled at the baby across the aisle.
- The children greeted us with enormous smiles.
Forms
smile · smiles · smiled · smiling
smilingly adverb — With a smile.