Both of my kids currently take gymnastics at a local gym.
My son's class is parent free (me and the hubby get to watch/video tape/photo take from the side lines) but my daughter's class is mom or dad & tot.
Here is what I wore for my daughter's class:
Me- Tank: Piperlime, Under tank: Forever 21, Shorts: Old Navy, Shoes: JC Penny, Glasses: Prada, Bag: Fossil
Bean- Tank & Shorts: Kohls, Shoes: Striderite
No makeup, no jewelry, hair in a braid right out of the shower, and easy to move in clothes.
I do have to wear socks in the gym, fear not for my wedges. ;)
Are your kids in sports?
I think it's great for kids to be in social groups outside of their siblings at least a few times a month.
Builds confidence and independence, nothing bad about that!