During the big announcement of the night

As the night on, Mackenzie was none the wiser of the modification Kaylyn had made to the back of her dress. Anytime she needed anything, Jerry would offer to get it for her, leaving her not needing to get up from her chair with the exception of the occasional lifting of her glorious ass off the chair to pull the bottom of her dress down further as it had been trying to ride up her legs all night.

Kaylyn still couldn’t believe Mackenzie, nor Jerry for that matter, had picked up on the back of her dress being open. She knew there was chance Jerry would ruin it if he noticed Mackenzie’s bra showing, but having not walked behind her anytime he got up, hadn’t noticed her predicament neither.

After what seemed like forever, it appeared the big announcement of the evening was finally going to happen, the announcing of the school’s prom King & Queen. Everyone had assumed the King would be the captain of the football team, as is usually the case and the popular head cheerleader would follow suit.

“Ladies & Gentlemen, at this time we would like your attention to the stage, as it is time to announce your prom King & Queen!” All the students clapped as the announcement continued, “First, we would like to announce the prom King, and your prom King is....Mr. Jerry Sullivan!!!”

Jerry gets a celebratory hug from his date, Mackenzie, who leans over and reaching her arms out causing a slight slip of the top of her dress while also pushing her ass out causing a strain in the bottom to loosen some of the fabric and Kaylyn hearing a faint tear noise knowing it’s from Mackenzie’s tight dress.

Jerry stands up and walks up to the stage, receiving his King crown on his head, waiting to hear who his prom Queen is.

“And for the prom Queen, we have a rare occurrence, we have a tied vote between two lovely young ladies.” Murmurs come over the gym as the announcement continues, “Our first Queen is, Ms. Kaylyn Brennan!!!” Kaylyn with a look of pure surprise, stands up, pulling down the bottom of her dress to assure it’s covering her big backside. Unbeknownst to her, the pulling had caused 2 problems, first was that both shoulder straps of the dress had popped free & second was the zipper in the back of her dress had opened down to just above where her bra was. They had Kaylyn stop just in front of the tables so they could announce her co-Queen and walk up together.

“And our other Queen, Ms. Mackenzie Fairbairn!!!” Kaylyn thought to herself ‘This couldn’t be any better, she’s absolutely gonna humiliate herself, especially in that underwear.’

As Mackenzie raised up in celebration, so excited she failed to realize her situation. In standing up so quickly, she had caused the bounce of her breasts to cause the top of her dress to slip down past her bra. She walked proud in her heels with sway in her ass, unknowingly flaunting her gaudy shiny golden strapless bra to all her classmates. As she got close to Kaylyn, they began walking in front of the whole school together, about to be crowned Queens.