Hostess Outfit. Any seasoned hostess will tell you that the key to the perfect hostess outfit is something that looks pulled together but that is comfortable and easy to move around in. Allow me to also suggest something in a darker color or with a pattern that won’t show a splatter of two! A flattering dress like this one from Top Shop is always at the top of my list. I’d add a statement necklace (with red in it!) to complete a look the First Lady would approve of.