Currently all you see in street style fashion is the use of over the knee socks.  It's a current trend that I remember using while going to High School but somehow it always comes back during unpredictable weather like Spring and Fall.  I guess it’s because it's a clothing accessory that can be styled in many different ways.  It also helps to keep warm during cooler days.  Here are a few images of girls rocking over the knee socks looking great from sexy styles to more conservative ones.

Miu Miu embellished over the knee socks

You may want to take a look at  7 Must-Have Spring Sandals.