Remus cocked an eyebrow at him. "I thought you liked that collar," he said, bemused. "I know I certainly like you in it… and nothing else."

"Well, I do," Sirius confessed, a tiny flush tingeing his cheeks. "But…"

"But nothing," Remus said firmly, deftly retying the necktie. "Lily wants a Muggle-style wedding, and Muggles wear neckties at these things. Trust me. You've got to wear it; you're the best man. And you agreed to it, too." He wondered how many times in the last few weeks he'd had to repeat that speech.

"I didn't know it'd be so bloody confining," Sirius complained, tugging at the necktie again. "Couldn't I just wear the collar instead? I mean, at least it'd be something around my neck."

Remus considered Sirius' request for exactly half a second. "No." He was quite sure that Lily's relatives, no matter how open they'd been to allowing her to attend a wizarding school, were not going to react favourably to the combination of Sirius Black in a dark blue Muggle tuxedo and a black, studded leather collar around his slim throat. "Listen," he soothed, "it's just for the ceremony. I promise you can take it off later."

"And later, shall I wear the collar you bought me?" Sirius asked hopefully.

Remus sucked in his breath sharply as his cock gave an interested twitch. "And nothing but," he assured him.

"Alright," Sirius said, somewhat mollified. "Let's go."