Can we please just talk about stripes for two seconds? it is one of the most oldest and classic pattern in fashion. Stripes never disappoints but the trick is to get the proportions that best suits you.
It’s not a secrete that horizontal stripes make on look bigger but that also depends on the size of the stripes . Thickness of the stripe is everything, thinner lines wont draw as much attention than thick lines do. Not only do thick lines make you bigger but it probably emphasise parts of your body one wouldnt want to highlight.
Just a young tip: vertical stripes elongates and makes one appear surprisly thinner.