A striped print dress works for a birthday party because stripes are inherently friendly and do not feel overly formal or costume-like. Stripes also happen to be flattering across different body types depending on the stripe direction and width. Vertical stripes tend to feel more lengthening. Horizontal stripes create movement and playfulness. The color combination in the stripes matters more than the actual stripe pattern. Look for versions where the stripe colors actually create contrast rather than being two similar shades that just look muddy. Striped dresses also work well with basic accessories because the stripes already provide pattern and interest. These are the striped print dresses that deliver reliable charm.