It happens to many of us, all that delicious turkey, cranberry dressing and pumpkin pie pack on the pounds. If you're a kid you probably don't want clothes for Christmas, but if you're in your mid twenties and you've been eyeing a gorgeous Haight and Ashbury double breasted jacket you might be ecstatic if your lovely significant other purchased the item and was resting safely under your tree.
You were overjoyed when you unwrapped it, only to find out that 20 days made for 10 extra pounds and it won't do up.
Well I'm trying to work that weight off, same as you should, but we can still wear that jacket without even having to modify it.
The answer is self contained buttons. Two buttons that are sewn together and put through the buttonholes. (You will need facing buttonholes, which most double breast jackets seem to have.)
Buttons (don't try to match them to the buttons on the jacket use something different i.e. if you're jacket has white buttons use black ones)
a pencil or some sort of separator
Step 1: Sew the buttons together
My only word of advice is to use a pencil or something to separate the buttons from each other while you're sewing because they will need some slack to fit properly.