Uh. that would imply i wear undies to begin with.
If you do normally wear them, why not take them off? You say it's your husband... so why not?
Just don't ride any glass elevators or go up ladders. ha! But.... is he in an office that he can really get away with seeing you like that? Or are you just going to let him grab a feel and let his imagination work away until he gets home? And... if he is the type that likes you to keep that kind of stuff at home, respect him in that way. this is his place of employment and if the boss got the idea that something untoward went on he may not feel so inclined to keep your hubby on any longer. Just consider all aspects first. If you know it will be ok and you can get away with it. Go for it!
Or wait until the weekend and take him shopping with you, wear the mini with no undies and then let him know at the beginning of the shopping. Then be ready for some fun at home!