What? Are the kilt police out in force again? You can wear your dress sporran with whatever you like. Even with a pair of jeans if that floats your boat!

Dress sporrans are USUALLY worn with evening dress. That means either a doublet (Montrose, Kenmore or others), a Prince Charlie coatee or an argyll jacket "dressed up" with a low cut 3 button waistcoat, but it's your wedding so do as you please. If you (and your fiancée) like it, and you both think that it looks good then wear it! Just don't invite the kilt police.