1.   A smile curved her lips.

2.   As I moved, a small, provocative smile curved her lips.

3.   Parr curved his lips, a dry acknowledgement.

4.   He looked up when he heard her, and Fran felt a ripple of heat curl along her veins when she saw the smile curving his lips.

5.   A faint smile curved his lips.

6.   An admiring smile curved his lips as he rested back against the boulder and closed his eyes.

7.   A cat-like smiled curved her lips.