would it look weird if i moved the buttons on a double breasted coat?

[DuplicitousBitch]

to make it fit? i am planning on losing weight but i think i over optimistically bought a gorgeous coat today and if i don't shrink could i move the buttons?

You can, but you (generally) move both sets of buttons the same amount rather than one set all the way across

Put pins where they might go, lay out the coat and look at where the pockets are, as that will tell you if it will look OK or not