Trick No. 15: Wear (the right) horizontal stripes
However, many fashion bloggers are also quick to point out that horizontal stripes can work — you just need to consider the other elements of the stripe.
• How far apart (and wide) are the stripes? Narrow to medium wide stripes tend to slim, while big stripes can do the opposite.
• How much contrast is there between the stripe and the background? Typically, the more contrast, the harder it is to pull off a horizontal stripe.
• Is the stripe distorted or a classic straight stripe? A distorted stripe may help slim depending on the pattern.