Summary:

Frank is absolutely distraught. His step-sister's best friend is once again hosting the Halloween party of the year, and this time everybody was told to dress extra slutty. The problem? The host has very exacting standards for costume quality and every single order Frank has made has fallen through in one way or another. Desperate to find a costume that can make an impression, Frank stumbles upon an out of the way shop that he swears didn't exist yesterday.

Fully Story on Literotica (Sorry guys, this one is 10k words, 46k characters. Would take way too long of a comment chain to post full text here)

Excerpt:

As I was digging through the clothes, I felt something catch on my pants. I batted away whatever it was with my hand, only for something else to catch on the other side. This time I twisted around to try and catch whoever was messing with me. Instead, my pants felt like they had been gripped on both sides. As I twisted inside my own pants, I fell forward once again into the pile of fabric.

Completing the twist to land on my back, I finally saw what was happening, and it shocked me to my core.

What I saw as I turned around was a pair of costumes. Both of them were fully filled out as if a woman were wearing them, but there was nothing where a woman's skin should be. They were literally just clothes floating in the air on their own.

The left outfit was a bright pink maid's uniform. The dress was poofy, and the top of the dress had a white collar with a little frilly black bowtie. The invisible body occupying the thing was... well, calling it "generous" would be a vast understatement. The poofy off-the-shoulder sleeves were only just barely visible around the edges of the stretched blouse, and even that only because I knew where to look by seeing where the elbow-length silk gloves ended.

The skirt was poofy, ending not even midway down the thigh. A frilly apron was wrapped around the waist, the cloth extending just enough to cover the wearer's crotch, and the bottom was only barely visible beneath the skirt. Soft white stockings, almost translucent, filled out as if they were shapely legs stretching all the way up onto the thigh, just barely under where the skirt ended. 

The whole ensemble finished in what I could only deem hot pink shiny stripper heels.

The outfit on the right, on the other hand, was a much more conservative business suit. Well, relatively conservative at least. The skirt was still very short, coming down not even halfway to the knees. It was paired with a bright blue blazer, matching the skirt, and a white button up blouse that was just tight enough to show hints of a black lace bra tucked underneath. Several of the top buttons were open in a way that would normally expose a bounty of flesh. Oddly, this outfit included a set of gloves as well. The white leather gloves went up and stopped right below the elbows. Below the skirt were a pair of pantyhose clad legs that had the same level of detail and shape as the maid.

The two outfits were currently attempting to drag me out of my pants. I quickly attempted to grab onto my pants and pull myself away, but the two outfits seemed to have insane grip. It really didn't help that this whole situation was somehow arousing. It was as if two very voluptuous, very invisible women were literally trying to claw my clothes off.

I was not about to be defeated by a pair of animated clothing, even if it did feel incredibly good.

"Just let go! This is stupid, and you need to stop." I demanded. But just then, something changed and a shadow passed over my face. I looked up, only to see a pair of stockings straddling my head leading straight up a skirt to a pair of filled out panties. Right before those panties dropped straight onto my face.

The feeling of warm cotton pressed against my face, and the sweet smell of a woman. The combination was intoxicating, and I found myself instinctively sticking out my tongue. The taste was... different, and not just because I had a pair of panties pressed against my mouth. There was an odd warmth, maybe even a hint of moisture coming from the fabric. It tasted, smelled, felt almost exactly like a woman was frantically mashing her cunt against my face.