Movies like The Engagement Clause

Carries has invested her career into the family company which she now leads. When her younger sister, Katie, announces that she's getting married an old stipulation in their grandmothers will comes to light. The husband to the one of the two sisters who marries first will inherit the company. Suddenly Carrie is faced with the prospect of losing her life as she knows it. She quickly hatches a plan to get married before her sister to save the situation.