At the mention of his wardrobe, Sirius was instantly distracted. Especially because said wardrobe resided within their bedroom. And oh the possibility that that opened up! All of the going to bed variety - and not geared toward sleep.
"Yes, let's look through the wardrobe!" He took hold of Remus' hands, pulling him in the direction of the stairs, because of course that way led also to the bed. He'd be more than happy to see what there was to wear - once he'd gotten himself and Remus both naked and into bed for some fun first!