father of the bride part 2

i really loved the first movie, 'father of the bride', but this one falls pretty flat.  the first movie sets up the family, steve martin as the father who cant quite accept that his little girl has grown up and is going to marry.  well, this one plays that exact same note, only this time he cant believe his daughter is going to have a baby.  that would have been a fun set up, considering the well crafted characters from the first film, but then they have to take it one step further and have diane keaton, steve martin's wife, also become pregnant.  i had a really hard time believing that a 49 year old woman could get pregnant, so that alone ruined the movie for me.  also, the light hearted over-the-top qualities of the first film are pushed even farther this time around.  but this time it went too far over the top and landed somewhere absurd and unbelievable.  steve martin does a good job in this, as does the planner martin short, but the whole premise and follow through are just too much.  it takes everything that was sweet and believable in the first film and takes it too far out of the realm of realism.  a disappointing follow up to a wonderful family movie.