It is normal for them to think they know what they will want when they get married. Tastes and styles will change as you mature. Knowing you want children is something most people know early on. As most girls hit puberty their biological urges start to kick in and that includes thinking about having kids.
Is it normal for a fourteen year old girl to know she wants children, and what she wants her wedding to be like? (Both of these won't happen for another 10 years at least).
It's normal, it's a personal preference actually, some girls are like that & some not, as you stated, you know it won't happen at least in the next 10 years, so the girl knowing she's a teenager herself & not ready to have a child, but it's just her desire to have child when the time comes, so that's appropriate, also the wedding is more usual, it's an important day for any person so, specially for girls, most girls get sensitive about their wedding & they want every detail be prefect, it's so normal, so all of these mostly sounds like puzzles of a plan. So that's really fine.
Nope! ^^
It's normal for most girls to think about this stuff, even at a young age. Most girls cannot wait...
I imagine it is perfectly normal .. Young girls are inspired by any regular bedtime story that involves a prince and a princess, or even the simple typical childhood play activity involving dolls. Children learn by example and are inspired by it .. Even their happy experience IN a family, or if they don't have a happy family life, seeing how happy other families are will inspire them to want to do the same thing when they grow up.
Geeze, my 4 year old granddaughter already thinks she knows that when she grows up, she wants to fall in love and have a family. I did it .. my daughter did it .. and now she, at the tender age of 4 wants to do it.
Yes .... it's perfectly natural. No one can EVER predict the future .. And don't think for one minute it will BE 10 years or ANY specific factor of time. It MAY happen far earlier or even far later than you anticipate.