Murder in Montmartre — Cheryl Peyton

This is the fourth book in the vacation murder series featuring tour operator and amateur sleuth Alex Trotter. Alex and her groom, homicide Detective Arlie Tate, are about to leave on their honeymoon in France when Alex learns that her father has been arrested in Paris for murdering his boss, the notorious editor of Mode de Vie Francais magazine. Arlie and Alex team up to investigate. Alex decides to go behind the scenes in the back-stabbing world of couture fashion. But can she carry off a daring disguise as a runway model and uncover the killer?