If an outfit's spotted on her, it's sure to be an instant sellout - like this 70s-style Topshop Unique dress that got completely snapped up even when the brand launched a second restock.
Your best bet for getting your hands on that particular dress now is trawling through eBay, but if you're not too fussed about getting exact replicas we've spotted a few other dresses on the Topshop website that look very similar to ones sported by Chung herself.
Here are 5 new season dresses that will have you looking Alexa-esque in no time:
MOTO Denim Western Dress, £42.
This dark indigo denim number is a dead ringer for Chung's version from her first ever range with AG Jeans last year.
Velvet Trim Lace Dress, £48.
The chicest way to work lace this season, this Victoriana-style dress works with or without tights (perfect for the temperamental August weather).
Look to the 90s when styling a black denim pinafore and team with a white tee or cami underneath.
Floral Shirred Dress, £46.
Floral print, check. Long-sleeves, check. high neck and above-knee hem, double check. Just add ankle boots for instant 70s-chic.
Chung is known for her love of Breton stripes. Throw on this oversized tee dress for instant understated cool.