Mr. Hardy's lips narrowed into a straight line.

His lips narrowed to a line.

Her bowed lips narrowed as they flickered a rapid smile.

The Shogun's lips and eyes narrowed into three thin lines.

His lips narrowed, and I knew it was Kenny.

Her voluptuous lips narrowed to a thin line.

Lisa's lips narrowed to a thin line.

His lips narrowed to a thin, bitter line.

Mrs. Warner's pretty lips narrowed to a thin line.

The pleasant smile disappeared, his lips narrowed to a thin line.