Why you should start wearing it: These days, it is impossibly chic to channel the geek look and round sunglasses do just the trick.
Circular shapes have been making their way around Instagram among fashion insiders.
Take your cue from model Kendall Jenner, who was recently spotted in a mirrored pair at Disneyland, or fashion blogger Nicole Warne in her Dior So Real sunglasses.
How to wear it: Round sunglasses are particularly flattering on those with heart-, square- and oval-shaped faces.
Those with round faces can still adopt the trend by picking angular frames with round lenses.
For a modern appeal, go for reflective lenses that look less retro.
Shanghai Tang Retro Round, $530, from Shanghai Tang stores
The style commonly associated with Emperor Puyi is updated with a metal bar at the top of the frame. The lenses are scratch- and impactresistant.
Linda Farrow x Erdem, $490, from On Pedder
A collaboration between eyewear label Linda Farrow and womenswear designer Erdem Moralioglu, this has cat eye elements, so it will flatter those with round faces too.
Ray-Ban RB4224, $460, from Sunglass Hut
This season, Ray-Ban has included new designs based on the round shape. Among them is this pair that is ultra-light, thanks to its pure titanium temples.
Quay Yibrow, $79, from What Women Want
With gold-mirrored accents above the lenses, you will be positively gleaming in this.
Topshop Lolita's 60s, $36.90, from sg.topshop.com
Had a late night? This pair will shield your eyebags from the light of day.
Etnia Barcelona, $445, from Kapok at 111 Middle Road
A cool, contemporary choice to beat the glare. Its temples are made of eco-friendly material.
•On Trend is a fortnightly column that highlights beauty and fashion trends, and includes a product guide.