In 1999, Mariah debuted as an actress in the movie "The bachelor." "The Bachelor" is a romantic comedy about a bachelor played by Chris O'Donnell, who must get married in the next 24 hours in order to collect his inheritance of $100 million... Mariah plays a small role in this movie. She appears as O'Donnell's ex-girlfriend, who is an opera diva...

The filming started in November 1998. Mariah remembers this scene in the Mirabella magazine: "It's over the top. I'm singing La Traviata, which is a highly dramatic opera-and my character dies at the end of the scene. The director said, "Okay, you need a stunt double for that [fall] right?" And I said, "Nah, I can do that," not realizing that I was going to have to do 30 more takes. My hips, my knees were killing me. A medic had to bring me ice, and I was like, "Never again."

Jimmie Shannon (Chris O’Donnell) values his freedom more than life itself. As his male peers, even his best buddy, Marco (Artie Lange), begin to hook up in marriage, Jimmie continues happily plugging away with his dating lifestyle, in no rush to find “the one.”

When he least expects it, Jimmie crosses paths with the adorable Anne (Renée Zellweger) and falls in love. After a three-year relationship, Jimmie feels the pressures of commitment and decides to "give in", reluctantly proposing to Anne at the most romantic of restaurants. Sensing his uncertainty and angry over his botched and lame attempt at a proposal, Anne dumps Jimmie back into the town known as "Bachelorville."

Shortly thereafter, Jimmie’s grandfather (Peter Ustinov) passes away and wills a $100 million inheritance to his grandson, on the condition he marries before his thirtieth birthday, which is less than twenty-four hours away.

After seeking advice from the family attorney, Gluckman (Ed Asner) and stock broker, O’Dell (Hal Holbrook), a desperate Jimmie hastily arranges for a priest (James Cromwell) to wait in the wings while he finds a bride.

He tries to reconcile with Anne and several other ex-girlfriends, including Buckley (Brooke Shields), a well-to-do ex-debutante; Ilana (Mariah Carey), an opera singer; Monique (Katharine Towne), a chef; Daphne (Jennifer Esposito), a cop; Zoe (Stacy Edwards), a window dresser; Carolyn (Sarah Silverman), a college student; and Stacy (Rebecca Cross) a commodities broker. Through these hilarious antics, Jimmie can’t help but discover the true meaning of love.