So, cyclists generally don't wear underwear when riding. Chafing, saddle sores, extra seams, chamois cream, vanity, whatever, name your reason, they're almost all valid. This is not really a problem at all, except when it comes to lucky underwear. How are you supposed to have a good race when you aren't wearing lucky underwear?
And this, my friends, is why I ski faster than I bike.
I bet those are Kristina Smigun's lucky underwear