R - 101 - Thursday's Child by Sandra Brown

Allison Leamon knew that pretending to be her identical twin sister was a bad idea. For although the two redheads looked exactly alike, they couldn’t be more different. How could a no-nonsense scientist like Allison possibly fool anyone into thinking that she was the bubbly, vivacious Annie?

Trading her sensible shoes for strappy sandals, her eyeglasses for contacts, and her lab smock for a chiffon dress, Allison was determined to try her best. Her first challenge was a dinner date with Annie’s fiancé, Davis. But what Allison didn’t expect was the presence of Davis’s best friend.

ID: R - 101