The best smile he'd ever seen brightened her already pretty face.

Your smile brightens the lives of all who see it.

A smile brightened her features and she moved toward him.

His smile brightened, as if he expected her to be pleased.

"I used to go to school high," she said, a smile brightening her face at the memory.

She walked in, a smile of satisfaction brightening her eyes.

This time he had chosen the correct response- her smile brightened again.

He looked at me, and a faint charming smile brightened his face.

Her smile brightened into the same tight-lipped one she had given him before.

He looked at her for a moment, and a white smile brightened his suntanned face.