Powerhouse actresses Diane Keaton, Mandy Moore, Lauren Graham and Piper Perabo serve up the laughs when they join wickedly funny director Michael Lehmann ("The Truth about Cats & Dogs," "40 Days and 40 Nights," "Heathers") in his new film about cutting the apron strings, "Because I Said So."

Keaton stars as Daphne Wilder, a mother whose love knows no bounds or boundaries. She is the proud mom of three daughters: stable psychologist Maggie (Graham), sexy and irreverent Mae (Perabo) and insecure, adorable Milly (Moore)-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, however, that her mom placed an ad in the online personals to find him. Comic mayhem unfolds as Daphne continues to do the wrong thing for the right reasons...all in the name of love.

In a hilarious battle of strong wills, the mother-daughter dynamic is tested in all its fierce, wacky complexity. The girls help Daphne finally discover the truths and impossibilities of motherly love, all while trying to answer the questions: where does it begin and where should it end?

Joining Lehmann behind the scenes on "Because I Said So" are scribes Karen Leigh Hopkins ("Stepmom") and Jessie Nelson ("I Am Sam"). Paul Brooks ("My Big Fat Greek Wedding") produces the film with Nelson.