open the kimono 

A 1990's phrase that means that everyone should share data. There should be no secrets between those in the meeting. As in a Japanese wife showing her husband her naked body by opening her silk robe or kimono.

If we’re going to make any progress with this new standard, we’re going to make sure everyone agrees to open the kimono and not withhold any information.

open the kimono by RadioRay September 24, 2005

Open up the kimono 

to expose the inner workings of a process or financial books. Typically used in the Tech industry.

we are meeting with the Venture Capital partners tomorrow, it's time to open up the kimono.

Open up the kimono by treetopflyer April 4, 2012