I guess b/c some people love 'em and some people hate 'em and some will think of JonBenet

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If it is your cup of tea and you think your child will have fun--they can be fun. But be leary of the pageant mom. There is at least one of them in every pageant and it would just throw my moms panties in a bunch b/c their daughter was THE most beautiful and they'd get all mad when their child doesn't place well.
My own funny pageant story--about THE pageant mom.
This was maybe the Miss Summerville Pageant in South Carolina--I don't remember the title exactly. The pageant was in a banquet room at a Plantation I believe. And it was Reason #5535 of what happens when mom lets daughter compete in a dress she could afford---but not the alternations. EEEK! My dress was sooo southern belle and too darn long. My sister also competed--I do think her dress was better...at least she didn't trip on it LOL!
But the funny part came when they were doing the scores. During the intermission--they had a drawing for Pageant Mom. I don't know what the title was...but it was MY mother who one. Actually my sister will say it was HER mother since that was the card that got pulled. And the funniest thing--my mom got all these dirty looks for "winning" the title.
So there are "moms" out there in the world--you want to make sure you know who you are dealing with. You can be nice...but there are fake ones out there. (Pretending to be nice, but aren't).
It is good that you know some moms who are already in it and can show you the ropes if necessary.
We never got far. But that is what happens when your pageant budget is limited to $50--a consignment store reject gown and your mom thinking that curls are the way to go and makes you look like a poodle.
If you are willing and able all the while making it fun...it can be something enjoyable. My favorite pageant was my very first one.
Your daughters dress sounds lovely!