Starting this week, every Wednesday on The Lovely Side will be devoted to wardrobe, hair, and beauty content. With summer internships right around the corner and interviews for real world jobs looming as well, I thought now would be a good time to delve into the world of office fashion. Sarah, a reader, recently emailed me asking about how to style a pencil skirt for her "somewhat casual, somewhat professional workplace full of fashionable co-workers." She's been lusting after pencil skirts…