The Atacoma wedges sent shoe lovers into a frenzy when they debuted in Acne’s Pre-Fall ‘09 collection.

Alexa Chung fell particularly in love with them; and the coveted bootie sold out within just a few days after she wore them on her MTV show. So maybe that’s what inspired Jeffrey Campbell to name his knock-off the Alexa?

It’s a well-studied copy. The shape’s exactly the same, the diagonal seaming is spot-on. In fact, the only difference between the two is the transition from the black leather to the silver metal panels. While Acne’s is seamless, Campbell’s has a bit of a divot.

With so many wedge booties out this season, it should be easy to avoid buying a pair based off someone else’s ideas.

A reader just alerted us to this very subtle, yet uncanny Prada knock-off.

We were amazed because:

1. The knock-off is by DKNY - not Forever21, not Jeffrey Campbell, nor Steve Madden.

2. We know it’s a gladiator sandal, but the straps are so exactly the same, it’s creepy.

3. Vogue.com put the DKNY’s in their Need it Now section, but not only did Prada design the sandal already, but the originals are also on sale at Bergdorf’s for practically the same price as the full-price DKNY’s.

4. DKNY even gave the type of sandal a different name - they consider them huarache sandals while Prada considers theirs gladiators…

On a related note, DKNY’s really on a roll these days, no?

—ALEXANDRA BEN-GURION