All 3 pieces are staples in my wardrobe that I mix and match regularly.
The skirt is a navy Ann Taylor suit skirt that I invested in and have worn a few times a month for the past few years. Easily getting a return on my investment. You can buy it here.
The blouse is old White House Black Market, but I still wear it regularly. You can buy a similar style here.
The shoes are BCBG that I got at DSW. You can get them here.