I don't own anything! This is loosely based off The Hangover. Cecelia is Loki's daughter. Her mother died in a car accident and that's why I made Loki so flirtatious. He's never been good at handling his emotions.

Natasha's POV

"Guys, I am alone!" Natasha whispered-screamed into the phone, "It's my wedding day and you lost the groom! You have six hours to find Clint or I will personally come to Las Vegas, find Clint, and kick all your stupid asses for not taking Steve, who apparently is the only responsible member of this team!" The line went dead and Tony looked up at Bruce, Thor, and Loki.
"Guys," He said, "We are royally screwed."

Third Person's POV

48 hours earlier…

"Woo! Vegas!" Tony yelled, as they sped down the road in his topless convertible. Bruce chuckled from his spot in the backseat and Thor was leaning out of his seat, practically sitting on his brother, who was pretending not to be excited. "To our fellow Avenger's last day as an unmarried man!" Thor clapped Clint's back making him swerve slightly. Our Avengers were all having a bachelor party for Clint the day before he and Natasha got married. Clint was wearing a black leather jacket and a white shirt with a pair of worn jeans. Tony was wearing a black shirt and a pair of relaxed jeans. Thor had his normal gray T-shirt and low cut jeans. Bruce wore a pair of stretchy pants and a white shirt. Strangely enough Loki looked pretty normal. He had a green button up shirt on, black slacks, and he'd cut his hair shorter again. When the crazy group had to stop at a red light, a group of girls were next to them of course decked out in short skirts and skimpy tops.
"Hey there boys!" A girl in the back seat called out. The front seats of both cars all had rings on and were obviously off limits.
"Hello ladies," Loki replied respectfully, his voice smooth and a mischievous smile gracing his features.
"Watch this," Thor whispered to the other members of the car.
"What's your name?" Another girl asked.
"Loki and you all are?"
"Fawn," The voluptuous blonde who had spoken first answered.
"Mia," The brunette with doe eyes who had spoken second said.
"Bianca," A curvy black haired girl told him, twirling a curl around her finger. Loki smiled sweetly.
"Lovely names," He told them with false sincerity, "This is my brother Thor." He gestured to his brother who had stopped almost sitting on him.
"You two don't look alike," Fawn said and Bianca and Mia nodded their heads in as if to agree. The two redheads in the front sear had gotten into a wedding conversation with Clint and Tony and rolled their eyes at their friends in the backseat.
"No," Loki said, taking on a look of sadness, "I recently found out I was adopted. It was horrible, but I love my brother and, you know, when I'm upset I just think back to the times Thor defended me when people mocked me for being different." All the girls cooed and Bianca leaned out of the car to hug him tightly.
"That is so horrible!" Mia said, pouting, "You know what? If we ever run into each other again I bet we could cheer you up." Then the light turned green and Clint sped away.
"Whoa!" Clint said, "That was as smooth as when I asked Natasha out."
"How did you ask Natasha to marry you?" Bruce asked and Clint launched into the story. About an hour later, the group was pulling into the hotel. As they checked in not a single one of them could have guessed what was going to happen that night.

Present time…

"Ooh," Bruce groaned loudly. He sat up and looked around. Their room was completely trashed and there was a cat on his chest that he was fairly certain he had never seen before. Thor was sleeping on a couch that the back was broken off of. Tony was lying on top of the bar with shot glasses surrounding him. Loki's black hair was peeking out of the bathroom door and he could see blonde, brown, and another black head also slightly visible. 'Must've run into Fawn, Mia, and Bianca' Bruce thought, 'Wait- Clint!' He jumped up and the cat on his chest hissed angrily then ran and hid. "Guys! Wake up!"
"What?" Thor said, jumping up and looking around. Tony woke up a little slower and glanced at him blearily.
"Shh!" Tony shushed him.
"Where's Clint?" Bruce asked panicked. Tony jumped up and slid on some debris.
"Loki!" Thor yelled to his younger brother and he jumped up, "Get up now! And please put some clothes on." Loki pulled on some pants and ran out of the bathroom.
"What? What?" He asked.
"We lost the Black Widow's groom!" Tony yelled. The Avengers called Natasha and after a very unpleasant conversation were left even more panicked than before.
"Okay, everyone, let's just calm down before Bruce hulks out," Tony said, ever protective of his friend. Bruce smiled appreciatively.
"Alright," Thor boomed, his voice immediately taking charge, "Loki has always been good at strategy so, what do we do?"
Loki seemed to be shocked his brother was putting the spotlight on him, but responded, "We need to look around and see if we can find evidence of where Clint is. Tony, you and Bruce go to the lobby and ask the staff if they saw us last night and if Barton was with us. Thor, you make sure everyone is dressed and out of our room. I'll look around and see if I can find anything."

Bruce's POV

"Excuse me, sir?" I said quietly, "Do you remember seeing us last night?" The man behind the counter turned around.
"Yea," He answered unenthusiastically. Tony and I waited for a second before being more specific.
"How many of us were there?" I asked.
"I didn't count."
"Okay, listen up. My name is Tony Stark. I'm sure you know me. You are going to tell me everything about the group of people we were with, alright?" Tony finally snapped at the man. The man's posture snapped straight and he looked embarrassed.
"I'm sorry Mr. Stark," He apologized, "You two were there and there was a tall guy with black hair and a really strong looking blonde guy and a guy about average height who kept winning all the dart games."
"That's all I needed to know," Tony said exasperatedly and turned on his heel. I smiled carefully and got into the elevator behind Tony. When the elevator dinged and we got out, Fawn, Mia, Bianca, and other random party-goers were ushered in by Thor. Thor, Tony, and I wondered around the room until they found Loki standing in a bedroom looking at a camera.
"So, we found out Clint was with us when we came back from the casino," Tony spoke out, moving to stand beside Loki, "What did you find?"
"This camera," He said. Everyone gathered around to look at the pictures. The first few pictures were of the guys in a bar drinking and laughing so much almost all the pictures were blurry. They scrolled through a few more pictures (Once they passed a very disturbing picture of Tony and Loki belly dancing that made Tony wish he could slam his head on a table until that image was out of his head). Finally they got to the last one that revealed Clint's location.
"He's on the top floor balcony?" Bruce said incredulously.
"Well, I could've guessed that," Thor responded. The group raced to the elevator and slammed the button.
"Clinton Barton!" Tony screeched.
"Your bride-to-be is ready to kill us!" Loki screamed.
"Everybody calm down," Bruce chimed in ever the voice of reason, "We have two hours until the wedding and it takes an hour to get home."

One extremely long car ride later…

Natasha's POV

I am going to cry. I am going to cry. I am going to-. "Clint!" I screamed starting to run towards him. Pepper grabbed my arm and stopped me.
"He can't see you in your dress," Pepper chastised, pulling me back into my room to freshen up my makeup and slick down my hair. I looked in the mirror and could hardly process my reflection. My red hair was growing out again so its gentle curls hung carefully around my face. My wedding dress was full and fluffed out like the bottom of a princess dress, but the top was tight and low-cut with spaghetti straps. I turned around and noticed how gorgeous Pepper looked. She wore a light blue strapless dress that had two strips of fabric that knotted in the middle of her chest and the excess fell loosely down the front of her dress. She was my maid of honor and Betty, Maria, and Jane were my bridesmaids. The bridesmaids' dresses were just like Pepper's except longer and instead of a knot there were straps.
"You know you look too good to have just had a baby," Natasha joked lightly, ecstatic knowing everything was back on schedule.
"You look way too good to be five weeks pregnant," Pepper joked back.
"Shush!" I warned her looking around, "I'm not even showing yet. You did make sure that all that dairy products were pasteurized and there is no processed meat and everything is cooked thoroughly, right?"
"Calm down," Pepper said softly, "I went through this too you know." Natasha felt comfortable around Pepper. Not quite as comfortable as she was with Clint, but more than she was with most people. Then she was called to stand in line and watched as Pepper left her side to join the bridesmaids and groomsmen (Steve, Tony, Bruce, and Thor) to walk down the aisle. Maria's younger sister held Robbie Stark and Cecilia was the flower girl. And as I walked down the aisle I couldn't believe that I'd managed to be so lucky.