Ladies wearing mini skirts and riding bicycles.... Sexy or Unsightly???

This afternoon, I watched High School Musical 3 with my daughters. Towards the end of the show, the lead actress Gabriella was riding a bicycle wearing a demin mini skirt. My daughter asked me why Gabriella can ride a bicycle wearing a mini skirt and why I always insisted that they have to wear pants when they ride bicycle? For me, I think it is out of decency that you wear proper attire when you are riding a bicycle due to the movement of the legs. Of cos, it is up to individual freedom of choice what they want to wear when they are cycling. And in the show, Gabriella was cycling so gracefully with mini skirt. So, what do you guys think???