Keeping Up with the Steins (2006)
Keeping Up with the Steins is a 2006 comedy film directed by Scott Marshall, and starring Garry Marshall, Jeremy Piven, Jami Gertz and Daryl Hannah. The film is also a commentary on how too many Jewish families see a bar mitzvah or bat mitzvah not as a coming of age for their son or daughter, but rather as an excuse to throw outrageously lavish parties.
More at Wikipedia.