shirt-Kut from the Kloth via Le Tote, blazer-Gap(more options here), shorts-Old Navy(similar here), loafers-G.H. Bass, ring/necklace-Jewel Mint(similar here and here)
I love a short suit for work in the summer. It's unexpected, seasonally appropriate, and can be quite a dynamic look, especially with this floral blouse, and the neon strip of color in the blazer. The necklace and loafers also add pops of color, and provide feminine touches to a somewhat masculine "school uniform" outfit.