A grin split his face when he saw Lucy in the doorway.

She looked around once, and a big grin split her face.

A grin of delight almost split his dirty face in half.

He stared at her; then a huge grin split his face.

A grin split his face like lightning across a black sky.

A savage grin with nothing of joy in it split his face.

The surgeon stopped dead in surprise, and then a grin split his face.

Then a grin split his face and he roared with laughter.

The younger woman's grin nearly split her face in two.

Then he did a double take, and a grin split his lips.