How can a skinny man dress well and look attractive? I am in a medical profession; I mostly wear trousers & shirts.

Skinny, thin or slim is healthy and most men would like to be thinner and healthier. You can wear tops and bottoms in different colors, such as a colorful red shirt with light grey or khaki pants or contrasting pants and a sport jacket. Prints, plaids, large checks or horizontal striped shirts are also flattering on thin men. Shirts should have shoulder seams at the shoulder. Pleated front pants with side pockets give you some weight in the hip area. Avoid slim leg pants and skinny jeans. Favor heavier type fabrics like corduroy, which is very trendy now, tweeds, subtle checks and denim can add some bulk to a thin frame. Suit jackets, blazers and sport jackets can give you a strong shoulder look. Turtle necks and chunky knit sweaters layered over a shirt are another way to add bulk to your look. Avoid big over-size styles or clothing that is too tight. Keep in mind that light colors add bulk, dark colors are more slimming.  Also stay away from monochromatic color (one color) outfits as they make you look thinner. How your clothes fit is very important. Find a tailor that can tweak the fit of your clothing, which can help improve your appearance.

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How to Dress for a Wedding: Men’s Suiting Guide for 2017
When it comes to dressing for a wedding, there can be a lot of stress that goes into the final outfit decision. Is what you chose too dressy? Not dressy enough? There is so much to be mindful of that it can become a bit overwhelming and sometimes even make you not want to go at all.

What shirt & shoes can I wear with white pants & a red tie?
Shirt and shoes should not be a problem to coordinate with your white pants and red tie. A colored shirt that looks good with red such as blue, purple, pink or even a mustard yellow would all look great with white pants and a red tie.  Other shirt ideas would be red and white or blue and white check or stripe shirts or a red , white and blue stripe or plaid shirt would also go with a red tie. Tan shoes or white loafers or white canvas shoes would look good with your white pants and are a better way to go than black accessories. If you are short wear a white belt and white shoes. Tan shoes and a tan belt would work with any of the combinations but are better on tall men. Shoes and belt do not have to match.