She said nothing, her full mouth curved in a smile.

Her mouth curved into a happy smile at the thought of seeing him again.

Red's mouth curved in a smile that did not reach his eyes.

He looked at me, his mouth curved in a smile without meaning.

Her mouth curved slightly as she Met my eyes, with complete understanding.

He glanced up, his big mouth curved in a smile.

The man's small and rather too feminine mouth curved into a smile.

I wondered if my mouth was curving at all into a smile.

She thought about that, her generous mouth curved in a smile.

She noticed his expression and her mouth curved in a smile.