What expression is this?

Please say what is the name of the expression of these girls, for the purpose of tagging. I believe I couldn't find the right tag at tag group:face tags.

Their eyes are wide open, as if they are paying attention to something, but they are otherwise expressionless. (If expressionless applies, just let me know.)

• post #625926
• post #815647
• post #944317

I wouldn't say they are expressionless; the latter two have a faint smile.

I think light_smile would be the best tag for the latter two. I honestly wouldn't tag any expressions on the first one, unless expressionless works for you.

I don't know what the first post is, but it's not expressionless. And yeah, light_smile would work on the last two.