Compare the leg shape, not just the label
Lay the jeans flat and look from the thigh to the hem. A bootcut shape is usually closer through the upper leg before opening lower down. Wide-leg denim has more room through a larger portion of the leg. Individual cuts vary, so the name alone is not enough.
Try both pairs with the same plain top first. Notice whether you prefer a change of width near the shoe or a broader column from higher up. Then choose the top that supports that outline.
Bootcut + elegant top
Here, “elegant” can mean a clean neckline, a smooth fabric, or a considered detail. Try a fluid blouse, a fine knit, or a simple fitted cardigan with dark bootcut jeans. The top does not need decoration or an expensive label.
Check the hem over your chosen shoes. It should clear the ground while leaving the opening enough space to fall. You do not have to wear heels; choose a length that works with the footwear you use.
Wide-leg + slim top
A slim top makes it easy to see where the wider denim begins. Try a tucked-in tee, a fine rib knit, or a waist-length cardigan. Slim describes the contrast with the jeans; it need not mean skin-tight.
If the top disappears inside a high waistband or pulls when you sit, try a little more length or ease. For an added layer, test a short jacket first so you can still see the upper line of the trousers.
Use finishing details to suit the occasion
Denim does not become formal just because the top is refined. Check whether jeans are appropriate for the setting. For a smart-casual plan, clean shoes, a tidy hem, and a simple bag may be all the finishing you need.
Keep one variable steady while testing: the same shoes for both jeans, then the same jeans with two tops. That comparison helps you build a repeatable outfit instead of chasing an abstract idea of the perfect silhouette.
