![New Aldi](https://static-ssl.businessinsider.com/image/5808cb358d83b460078b5a2f-2400/img_0550.jpg)
Business Insider/Hayley Peterson
Aldi is taking aim at Whole Foods.
$4 that Aldi plans to sell more items under its in-house brand, which keeps prices low for customers.
Aldi CEO Jason Hart told Reuters that Aldi's prices are 21% cheaper than competitors like Walmart.
The chain is also planning to open 400 new stores by the end of next year, according to Reuters.
Aldi is spending $1.6 billion to implement a new store design in 1,300 of its 1,600 US stores, $4.
The German-owned grocery chain debuted the new design in October at a store in Richmond, Virginia. The Aldi store has softer lighting than its older stores, as well as a larger fresh produce section, wider aisles, and electronic displays on the walls.
Here's what it looks like: