You first choose what brought you to Bombfell: to seek advice, step up your look, save time shopping, or to help out your partner. Then you select what size clothing you wear now, and enter info about your height, weight, and body shape. Choose how you like your clothes to fit (trim or relaxed), and then choose one or more styles you are looking for (casual, classic, modern, or preppy).
You are also assigned a personal stylist who you communicate with through email. My stylist was always attentive and quick to respond. I did wish there was more of an opportunity to describe your style up front — like a place to upload a few pictures of outfits you normally wear, for instance, to give the stylist a better idea of what you like right off the bat. I was particularly impressed with how detailed you can get with sizing, however, which put my mind at ease on that front: You're prompted to enter measurements for your chest, belly, neck, head, shoulder width, torso length, bicep, and sleeve length. (I would recommend investing in a tape measurer if you don't already have one, to make sure you get the most accurate measurements possible.)