St. John 2-piece pant set with bonus shell P/4

St. John Caviar knit pant with coordinating top. Pants are black, top is white, gray and black. also included is a bonus shell, unlabeled, to wear under the top if you'd like. Pants fall above ankle and are size petite. top is size 4. Black shell is unmarked. Model is 5'5" and size 2 -4.