A favorite of the ’90s, the t-shirt under a slip dress has been a breakout start of 2016 and if the streets outside fashion week have any bearing this trend is going to continue to be a big one in 2017. So far this year, Blogger Not Billionaire has featured an evening dress over a sweatshirt (HERE) as a more avante garde way of wearing this trend showing that fundamentally the trend is about unconventional layering rather than the actual type of shirt or dress you are layering. Today however we are going full on 90s with a short slip dress and a fitted Brandy Melville t-shirt. I loved putting…