Heh heh.
I have two dd's and a ds, and they all dance. 
In my opinion, dd1 has an extremely sensible attitude to the make-up, glitz, spangles and costumes, as she recognizes it is for performance. So, for the stage, she gets on her false eyelashes and whatnot.
She wears no make up at all in her regular life, wears jeans, boots, and is quite the scruffiness and most balanced kid I know.
In a very interesting twist, the dance costumes and make up have given her a balanced insight into performing femininity a la Judith butler.
She also spent the week before Christmas in a workshop for 'equal voice', a local organization campaigning for women in politics.
To sit with a one year old and tut at dance because they wear makeup makes me feel that you are nicely tripping along a stereotypical 'dance is bad' path, without actually having any personal knowledge.
I am absolutely secure in my feminist beliefs. As is dd1.
She doesn't do disco - she did freestyle in the UK. At the mo she takes, ballet, jazz, modern and garage tap. (Tap is her thing, really, but essentially she dances about 5-6 hours a week. The practices look nothing like the performances, and are full of girls of all shapes and sizes who are exploring the strength and fluidity of their bodies. No make up or spangles in sight)
Dd1's first dance teacher was a size 22.
Dd1 isn't going to be a professional dancer. She's a grade A student in a gifted programme, with a strong vocation towards making the old a better place. Most of the girls in dance will take their homework to competitions, and concentrate on their text books in between performances. Dance gives them a discipline that permeates through their life, and most of the dancers are also the hardest workers in school, getting the best grades.
To stick with a physical activity that takes up so much time for so many years, and work hard, isn't something I'm going to complain about.
I always find these threads quite funny. I thought that way once.
. And I see similar attitudes with mums of toddlers. I have a great friend who used to take the piss out of me allowing my dd to wear makeup for shows, what with my all encompassing feminist attitude. But she didn't see the impact it has on dd.
Putting on stage make up is a glorious pita. So much so that it reinforces the 'this is just for performance' angle, which gives the girls a really good insight into 'performing' and make the link to femininity and real life.
Sure, you'll get a few nutters that will look at it like pageants, but their girls won't still be doing it when they are old enough to start forming their own ideas about feminism and the role of women in society. For those girls, dance is bizarrely a great introduction to societal expectations and the necessity of conforming to the rules.
I'm very proud of my dd.
I'm very proud of ds, too - he loves to dance. He isn't much impressed by having to wear makeup, but again, what a great way to be able to discuss gendered expectations, huh?
Who knew that a few dance lessons would mean they get delusions of gender for free?