In the fitting room

 ... The classic ghost costume for me please." you said as the shop attendant handed you a package of the costume.

"That's so lame..." you girlfriend complained

"You may try this first if you like sir. Because there are a few sizes, and it'll look much better if you wear a size that suits your body type." she said as she directed you to the fitting room.

You find it funny  why just to try a plain white sheet you are asked to do it in the fitting room, it's not like you're going to take out your clothes anyway. But you complied and went into the fitting room.

You took the white sheet off the package and covered yourself in it, aligning your eye with the holes. But the sheet is actually way too short, since it was only covering up to your knee.

"This must be kid's size." you thought to yourself as you took off the sheet and going back ou to ask for the adult size. But before you can come out, you saw what looks like a belly dancer's bottom half of the costume were hanging behind the fitting room door probably left by the previous customer. 

As a random thought went through your head to try it on. So you slide your pants down, and wear the bottom. Immediately you felt tingling all over your body, and you watched as your body slowly shifted and becoming more and more feminine. Until you can barely recognize yourself in the mirror. You have turned into a beautiful girl.

You proceed to take off you shirt too, letting your newly developed breasts hang free on your chest. Then watching your feminine form, youbegan shaking your hips, making your bottom rattle.

"Is everything okay?" you girlfriend asked from outside

"Yeah!" you said realizing your voice has changed too. Your girlfriend was so confused of what happened since she was waiting in front of your fitting room as noone else walk in there. So you open the door, to show her your new form.

You shook your hips, making your bottom rattle and you can feel your new boobs jiggle folloing your body movement.

"It's me babe! What do you think?" you asked showing her your body, but your girlfriend was so shocked and speechless she just stood there watching what used to be her boyfriend now in the body of a woman, shaking her hips.

"Ah! I see you like our new body shifter costume sir, um- miss.. It's a bit more pricey compared to the usual costume we sell, but we can guarantee that you won't regret it. May I get you the top?" the shop attendant saw you inside the fitting room and you immediately nod asking her to bring you the complete set of the outfit..

Your girlfriend walked in the fitting room and touched your jiggling breasts as you moan softly feeling how sensitive your new nipples is. 

"I think I'm completely a woman now, this is insane. I'm totally getting this costume." you said to your girlfriend as she smiles thinking of what you two can explore after a night at the party.

Angel and Demon

 .. the couple costume please." you said as he shop attendant handed you a box that contains two costume inside. Yu then proceed to checkout and drive home.

As your girlfriend and you were about to dress up to go to the party, that's when you realized that inside the box was two costumes that are for girls. It was angel and demon costume. Your girlfriend saw the inside of it, she quickly grabbed the demon costume.

"I'll get the demon, you'll wear the angel one" she said giggling, taking her short off and began putting the costume 

"I can't wear this, this is for girl." you said, holding the white top the tutu and the head halo accessories. 

"Well, you're the one who picked it, so now you must wear it. Hurry up, we're getting late." your girlfriend said, don't want to argue with her, you finally decide to just wear it. It'll look funny and silly at least, you thought to your self.

A few minutes later you stood in front of your girlfriend wearing a very tight top and the tutu barely fit on your hips. Adding the halo headband, made you look very silly.

"What do you think?" you said in a high pitched voice. Both of you were shocked by the voice that came out from your mouth. Then your body began to shift, you slowly shrunk and reshaped into a more feminine form. Your girlfriend watched every second as your hair grew longer and your face turned softer and formed a beautiful jaw line.

You can feel the top and tutu you wore began to feel more and more comfortable to your body, as your chest slowly inflated pushing the white top. And after a few mintes, you can feel that your body has changed.

The first thing you noticed was you were no longer taller than your girlfriend but you are at eye level with her, she was even a bit taller than you now.

"OMG! You're so cute!" your girlfriend shrieked as she inspected your new form. 

"Am I really turned into a girl now?" you asked in confusion as you cupped your breasts feeling your developed chest. 

"Yes! I can't let you go as a guy to our girl's only party, that's why I asked he shop to give you female costume." she said as she walked closer and hold your hand. You felt weird to have your small so small compared to her when you used to feel her hand smaller than yours. She then gave you a soft kiss on the lips feeling your new soft lips brushed against her was a new experience.

"You okay in there?" she said

"Ye-yeah! Just a bit overwhelmed by the change." you said blushing.

"So? Is my new girlfriend ready to hit the party?" she giggled 

"I guess, I'm ready now.." you said making your girlfriend hugs and pulled you out to go to the party.

"But, I'll be able to turn back to a man right?"

"Well, we'll see. Because after tonight you might wanna stay as my girlfriend!" 

Doctor

 ... the Doctor costume." you said as the store attendant handed you the doctor costume package.

"I think I'll get the matching nurse one too." Said you girlfriend. You then proceed to checkout, and drive home.

At home you unpack the whole costume to find your costume was very good quality, it was a complete package with a short, black pants, doctor's coat, even a stethoscope for props, and for your girlfriend's costume were a revealing nurse outfit, complete with a head accessory. 

While your girlfriend was in the shower, and you were waiting for her you went thru her costume as you grabbed the headband that looks like a nurse hat and put it on your head.

Immediately you felt tingle rushing down from your head to your toes, as you watched you body shifted. Long blonde hair falls from your head, as your chest inflates, hips widen, and you feel an emptiness in your crotch area. 

Your girlfriend were shocked when she walked out of the bathroom to see a blonde girl were sitting on the bed. 

"Who are you?" she shrieked as you tried to calm her down and convince her that you were his boyfriend. 

"I think this costume has magical power..." you said while taking off your shirt revealing your developed breasts. Your girlfriend watched in awe looing at what used to be her muscular boyfriend now a curvy girl. You then grabbed the stethoscope and wrapped it around her neck, and in an instant her body grew taller, her hair shorten, her chest flatten, as her figure turned into a more masculine form.

"Holy shit! I got a dick!" she said watching her vagina slowly getting replaced with a hard erected cock. You felt funny inside, looking at her new masculine figure especially her erected cock made your new pussy felt damp. You walked slowly towards her, twirling your hair.

"I don't know what's wrong with me, but I'm feeling super attracted to you." you said biting your lips

"Well, having  dick and looking at my turned boyfriend really turned me on too!" said your girlfriend pushing you to the bed and slowly slide her cock in side your wet pussy.

You can feel your breasts jiggles with every thrust, the new senation that send waves of pleasure overwhelmed you. Both of you can agree that it was the best sex you two ever experience. And after experiencing multiple orgasms as a girl, and she has loaded so many cums in you, she collapsed as you both panting and giggled to each other.

"I think we're late to the party.." you said between your breath

"I don't care about that party now, i just want to spend the night with my girlfriend." he said as you cuddled into his arm.

Link

 .. Link costume" you made your decision and headed to checkout.

Arriving home you two were in a hurry to get ready before the party. As your girlfriend were taking a shower, you open the costume you just bought and decide to put it on.

"It feels like a girl's costume, this looks like a dress.." you thought to yourself, but quickly brushed that thought off and began dressing up. And as soon as you put the entire costume on, your suspicion were confirmed, it was really a link costume for girl. 

But then when you tried to take them off, your body has started shifting. Your figure become smaller and dainty, you shrink as you skin become smoother, you can feel a small bump was formed on your chest, as your penis is replaced with a soft and sensitive vagina. 

Looking at your new form in the full body mirror really shocked you, you look like a little girl. You felt your heart sank by the transformation, as your hormones started to affect your emotion. You began sobbing.

When your girlfriend came out of the shower and found a girl in link costume sob, she immediately rushed towards you.

"Babe? is that you? why are you a girl?" she asked but you stayed quiet unable to say a word. She then pulled you and embrace you in her hug. You can feel how small you are now compared to your old body as your girlfriend hugged you.

"I'm sorry, I should've told you that some of the costumes sold there has magic spell sewn into it to make the costume be more fitting and realistic, so I guess you just picked up one of them. And unfortunately the spell might be permanent if applied to the opposite gender. But don't be sad, you look pretty and cute." she said lifting your head as she wiped your tears.

"I can't be a girl. I don't wanna be a girl" you said in high pitched girly voice.

"I'm sorry babe, but that's what your life is from now on. Cheer up, I promise you being a girl isn't that horrible. I can teach you." she said giving you a soft kiss.

"Will this mean I'm no longer your boyfriend? Well, I know you're not a lesbian"

"Yes, but even better, you can be my little sister. What do you think, sis?" she said and a smile formed on your girly face.

"Now wipe your tears, put on your cute smile, and we'll have the best halloween party for tonight. And for tomorrow, I'll take you shopping." 

Girlfriend's pick

 "we'll take the body suit and this dress!" your girlfriend suddenly cut you and made a decision for you. Before you could argue she has rushed to the cashier and pay for the costume.

When you both arrived home, without wasting any time your girlfriend quickly undressed you and slid your body into the tight body suit. You can feel the body suit started to wok its magic as it readjust the shape of your body into a more slender and feminine form that matches the body suit. And after your girlfriend zipped you into the body suit, your transformation was complete. You froze as you looked at the naked woman staring back at you in the mirror.

"For now, you are 100% a girl! I want you to be a girl, because tonight we're going out with the girls!" she said admiring your new form.

"No, I'm not going. Specially not like this, and wearing that!" you denied when you saw your girlfriend holding your see thru dress with the lingerie. "It's the same as you let me go out naked."

"How about we make a deal? I see that you can't take your eyes off that chest of yours, tomorrow I'll wear that body suit and I'll let you go wild..." you tried so hard not to stare at your own reflection, but your girlfriend do notice it. You took another glance at your reflection and seeing your girlfriend inside this skin surely will be an amazing sex experience. So you agreed and your girlfriend began  dressing you up and applying you make up.

You were super nervous all the way to the party, going to a party as a girl, and wearing such a revealing clothes were more than enough to terrify you. Plus you felt so left out going to a halloween party not wearing costume, well technically you're wearing one, but to other people you were just a girl in a dress. 

When you two arrived, her friends gave you a warm hug and complimented on how you looks. They knew exactly that it was you under the skin, but they went along and treat you just like the other girls.

It was weird having the boys kept checking you out which made you uneasy. But luckily after a few shots you could loosen up, and start to enjoy the party. And it doesn't take long before you start separating from the girls while some guys are trying to seduce you.

Your girlfriend panicked when she noticed that you were missing, and went looking for you everywhere.

"There you are!" she said when she found you outside. "Come on back in, what are you doing here?"

"Oh don't worry about me, I'll probably be home late. Um, no. I'll probably spend the night at Roland's place.." you said to her

"Who's Roland?" she asked as a muscular man in Jack Sparrow costume shows up and grabbed your arm as you follow him.

"See you tomorrow.." you mouthed to your girlfriend as you get into the car and he drives you to his place.

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