How to get the sport jacket
In Extended play... First, click on the chair and enter the dream office. Second, while in the dream office, click the phone and take it off the receiver.
Then, exit the dream (through the door, or use the map) and return to the "real" office... Finally, click the painting on the right (the quack stick one) and you will get the jacket.
And yes, the final wardrobe item for achieving the highest rank are the Dangereseue... too? sunglasses
There are so many wardrobe items in this episode that it's impossible to get them all in one photo... so here they are
"Secrets" (A.K.A. "The public flasher")