Eggsy’s wearing his dress uniform because he was a marine and of course he would want to wear it.
Harry is wearing a pink waistcoat because this is Harry we’re talking about of course he is.
I want this and I will keep this theory alive till the day the movie is there. Someone needs to draw them in those outfits on their wedding day. Or make a short story. Give me material.
“Harry, that is truly hideous.” Merlin rubbed his temples. “I thought I was so lucky when I dissuaded Eggsy from wearing that awful orange tux, but now you have to wear a Pepto-Bismol waistcoat, of all things.”
Before Harry could protest, Roxy stepped in: “It’s his wedding day.” She rolled her eyes, giving Harry a supportive smile. “Let him wear what he wants. Besides, Eggsy would marry Harry in a chicken costume if that was what made them happy.”
“I draw the line at dressing up as an animal,” Eggsy declared, walking into the room in a full military dress. He then whistled, looking Harry up and down. “Very nice.”
“Eggsy, you are not supposed to see groom before the ceremony! It’s bad luck! Can’t you spend twenty-four hours apart?” Merlin groused.
The couple looked at each other, amused. “No,” they both said in unison.
Merlin threw up his hands. “If your ceremony is interrupted by another villainous attack, don’t come crying to me!” Closing his eyes, Merlin sighed, “Now if you excuse me, I need to check to see if Jack has stopped that infuriating American agent from taking another bite out of the wedding cake.”
“Don’t worry about him; weddings made Merlin a bit tetchy,” Harry told them, once the quartermaster had stormed off, kilt swinging angrily behind him. “This hullabaloo is quite different from his wedding.”
Eggsy and Roxy’s jaws dropped. “Merlin’s married?” Eggsy exclaimed.
“To whom?” Roxy demanded.
“Oh, you’ll see,” Harry said, with a mysterious smile. “If Merlin gets enough alcohol in him, he’ll be waltzing across the floor with him.”
“Him?” Eggsy asked. “I assumed he…I dunno, Merlin and Ginger…”
“Oh, no, they can’t stand each other,” Harry said, clearly enjoying himself. “I remember back in 1992 – “
Suddenly, there was a burst of swearing and Jack shouting, “Someone get that dog!,” along with what sounded like several trumpets being trampled and wings flapping. “The doves!” they heard Merlin groan. “Fuck!”
“I better see what this is all about,” Roxy said, amused, then glanced over at both of them as she stepped out of the room. “Why don’t you two…practice your vows or something?”
“Rox, you’re the guv’nor,” Eggsy declared, and Roxy gave him a quick wink before hurrying out.
He then turned to Harry, cheeks turning a slow, steady pink when he caught Harry’s gaze. “What?” Eggsy asked.
“True. But today…” Harry stepped forward, putting both hands on Eggsy’s forearms and taking in the whole effect. The uniform emphasized Eggsy’s broad shoulders and lean muscles, but it wasn’t bespoke, according to his tailor’s eye. Harry could see it had been altered. “Where is this uniform from?”
“It’s my dad’s,” Eggsy said. “Mum said he got married in this, too, and we thought…oh, no, Harry, don’t go apologizing now.”
Harry let out a shuddering sigh, drawing back. “Your mother isn’t thrilled about this whole thing, is she?”
“Well, she hadn’t exactly pictured my wedding like this at all,” Eggsy admitted. “But she’s not going to stand up and yell I object! during the ceremony, especially since she’s walking me down the aisle. She just wants to see me happy.” He placed a hand on Harry’s cheek, smiling like he hadn’t in months. “Harry, you have no idea how happy I am to have you in my life, and – “
“It’s time!” Roxy exclaimed, looking a bit flustered as she threw open the door. “Come on, Eggsy, you got to get to your mum, and Harry’s got to get up on the altar before everyone thinks you’re running late again. Come on!”
Harry took Eggsy’s hands in his and squeezed. “I love you.”
Eggsy kissed him. “I do, too. Now, let’s get married.”