No pattern that way, but wearing braces (suspenders) with trousers (under the vest) seems to solve the problem for me. 
I'm waiting for my next vest to confirm that experience, but it works with the two I have so far.
Bill+
Rev'd Father Bill White: Mostly retired Parish Priest & former Elementary Headmaster. Lover of God, dogs, most people, joy, tradition, humour & clarity. Legion Padre, theologian, teacher, philosopher, linguist, encourager of hearts & souls & a firm believer in dignity, decency, & duty. A proud Canadian Sinclair with solid Welsh and other heritage.
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