It's wrong, WHATEVER the gender.
Why is it wrong? Really. You want your children to maybe enjoy the things you enjoyed, so you want to expose them to it. You hope they're good at it...it's human nature. I have a stepdaughter who was involved in pageants at a young age. Her mother encouraged it. We just had her wedding last weekend, a more beautiful and poised girl I have never met. She credits pageants for this sense of grace. Now, would I ever put my own daughter in a pageant? NO...but I'd have her taking music lessons and other things that I enjoyed. So my point is, SO WHAT?