Because I Said So (2007)

Diane Keaton stars as Daphne Wilder, a mother whose love knows no bounds or boundaries. She is the proud mother of three daughters: stable psychologist Maggie; sexy and irreverent Mae and insecure, adorable Milly - who, when it comes to men, is like psychotic flypaper. In order to prevent her youngest from making the same mistakes she did, Daphne decides to set Milly up with the perfect man. Little does Milly know that her mother has placed an ad in the online personals to find him, interviewing all prospective partners.

Official website: http://www.becauseisaidsomovie.com/