If you like to wear canvas sneakers or clunky boots, consider getting a pair that has a colorful lining on the inside
But the Quran and Sunnah regard that as disobedience to their Lord of the creation, Allah
If guests choose not to go full black-tie, they should err on the side of more formal than not, avoiding casual fabrics like cotton, linen, and denim, as well as forgoing relaxed footwear such as sneakers and flat sandals
However, if you are concerned that your rolls might show, then I would suggest some shapewear
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