I can agree with many that I can understand how people find age regression unsettling. It's kind of the way I find a lot of ganging/bukkake caps. To be quite candid, fictionalized clear age regression ones aren't illegal, the use of pornography in caps still is. Nobody enforces it, but still.
What about a cheerleader one? That includes all ages and types of (un)dress. Or something more esoteric -- animal print, water park, getting a piercing, handstand, etc.