Kim, Khloe and Kourtney Kardashian have premiered their latest business venture -- their clothing line!

KimSearsLingerie230.jpgIt includes dresses, pantsuits, lingerie, boots, heels, jewelry and more.

Kim has Tweeted about how hard the trio worked on the Sears clothing line. The sisters debuted the line with a 72-hour online pre-sale starting Monday. For that window, items are 30 percent off.

The line will be carried in 400 stores in the U.S. starting August 25. Prices start at $20 for a ring and go up to $99 for a dress or pansuit ... on the expensive side for Sears.

But, Kim has expensive taste -- check out how much her wedding invitations reportedly cost after the jump!