The hottest fashion trend: Eyeglasses

The trend toward nerdy glasses has really blown up in the last year, says optician Sarah Michelin. The 24-year-old owns five pairs of glasses, which she switches up regularly as she would a handbag or high heels, choosing whichever fits her mood and her outfit that day.

Today, she's wearing a catchy pair of thick-rimmed, red Prada glasses, studded with silver bling along the sides.

"I only wear them for fashion," she explains. Because she is so near-sighted, Michelin likes wearing contacts so she can more easily put on her makeup in the mornings. But even though she can go eyeglass-free, she has no desire to ditch her frames.