Waistcoat - Research.

The waistcoat at this time has a distinct military look to it - it appears to be tight fitting and formal. It is buttoned all the way up the centre front with a pocket on either side, and is tightened round the back using lacing. The waistcoat in the 18th Century was generally mid-thigh length but eventually shortened to the waist at the beginning of the 19th Century.

Augustus John The Third Of Briston by Thomas Gainsborugh, 1968.

George Lord Vernon by Thomas Gainsborough, 1967.