You can always submit your measurement after placing the order. For now, just select Customize with Made to Measure, click Add to Shopping Bag and complete order. Later on go to Account section, visit My Orders page and submit your latest measurement.
If your bare chest size measurement is 40 inches, you should select size 40 only from the drop-down.The Top chest attribute in the size chart refers to the garment chest size. It is inclusive of the required 3 to 4 inches loosening, to ensure the right fit.
If your bare chest measurement falls between 2 sizes i.e 37 inches, you should select size 38.
https://www.utsavfashion.com/product/plain-linen-silk-nehru-jacket-in-light-yellow-mhg353454144Plain Linen Silk Nehru Jacket in Light Yellowhttps://medias.utsavfashion.com/media/catalog/product/cache/1/small_image/295x/040ec09b1e35df139433887a97daa66f/m/h/mhg353.jpg4386USDInStock/men/men/plus/men/festive/men/linen/men/yellow/men/nehru jackets/men/traditionalPlain Linen Silk Nehru Jacket in Light Yellow <ul><li> Readymade Linen Art Silk Nehru Jacket in Light Yellow</li><li> Gracefully enhanced with Buttons</li><li> Do note: Kurta and Pajama shown in image are for presentation purpose only. Half to one inch may vary in measurement. (slight variation in actual color vs. image is possible. )</li></ul>USDtype_new:Nehru Jacketscolorfam:Yellowfabric:LinenYellowLinenNehru Jackets41%-50%MenReady to Ship, Within 2 days, Within 7 days, Within 10 days, Within 15 days, More than 15 DaysReadymadeFestiveMenswearTraditional38