Thanks to wxhluyp for inspiring this fantasy. 

I am at a quince años party - not as a guest, but as the party girl. I wear a long, pleated pink dress, though sleeveless and rather low cut, and high heels. The dress is much like my avatar's:

 My hair, makeup and tiara are more or less like this:

Shoes like the one on the right:

But I'd be wearing pink nail polish on my toenails. 

I am called to the stage and I am crowned queen of the party with a tiara like this one:

I then waltz with a professional dancer hired for the party, I blush as I find him very hot. It turns out my quince años dress has detachable parts, and at some point the bottom strip falls off, so that the dress is now only knee-high. That's the cue for the next bit of the party to begin: the stage is cleared and a male sripper is brought in. When he's down to his thong, he walks up to me and, right in front of me, takes it off so he's stark naked, his erect cock almost grazing my lips. I can't help myself, and I take his cock in my mouth, giving my first blowjob in front of everyone. The crowd goes wild. After he comes, as I swallow his cum I realize more bits of the dress have fallen off - I am now only wearing a very skimpy pink top and miniskirt.

That's the cue for the next stage. A man walks towards me - he's black, easily six feet tall, barechested, muscular. He takes  me by the hand and lead me on stage, and as we step onto the stage the remains of my quince años dress fall off - I'm left with only a pink bra and thong.

We turn to face the audience, and he unstraps my bra in a single motion, letting it fall to the floor. I blush as every pair of eyes in the room stares at my breasts. I feel my nipples become erect and a wetness between my legs. As if in a trance, I kick off my shoes and take off my thong. A bed is brought on stage; completely naked save for the tiara on my head, I climb into it and spread my legs wide, showing my virgin pussy to everyone, more or less like this:

I hear the man who brought me to the stage pull down his jeans' zipper. He grabs my tits, and without a word, thrusts his huge, throbbing manhood into my wet pussy.