You obviously step in

You and your "plus one" immediately follow the entourage into the house, catching the bride just as she's coming up the stairs to search for something.

"Excuse me, miss," you bark at her and she turns to face you, sighing and rolling her eyes.

"What are you doing here?"

"Admiring my handiwork," you address her, "and putting my role as the clothing controller to good use."

"Sir," the groom tries to step in, "I don't recall who invited you, but perhaps it would be best if you leave."

"Maybe I will, but you stay out of this," you warn him with a Kubrick stare, and he takes the hint.

"And you," you turn back to the bride, "where do you think you're going?"

"Uhhh..." she tries to think of a lie, "just upstairs to freshen up."

"Alright," you nonchalantly start the bombshell, "no more clothes for you until the end of your honeymoon. Not even the veil and gloves and all that crap after the reception's done, just flip flops."

"Are you fucking kidding me?" the bride is clearly annoyed.

"Last warning," you bark back, "every time after this you give me lip, that's another week added to your nudity."

"Okay," the bride rushes back upstairs with as neutral a tone as she could.

"Don't you think you're being excessive?" the groom tries to reason with you.

"No," you turn back to him, "and when you give her the cake bikini later tonight, I want you to smush the cake as far up her pussy as you can."

"O-okay," the groom turns away from you as the guests start arriving to give the couple gifts and shake their hands.