It was graduation weekend, the first time I was ever curious. My Uncle had flown in from St. Louis for my high school graduation, without his new wife or his children, now numbering six with the two step children. I overheard him talking to my father about his eldest stepdaughter, who was 16. He referenced my girlfriend, Justine just as a point.
"She dresses way out there, and I worry she's going to be a bad influence on Rachel (his youngest daughter, who was 12 at the time)."
"She'll be fine." my dad said.
"It's just hard because the boys (his two sons, ages 17 and 15) can't help but notice her, I mean she's got a body that is built like a porn queen."
"Did you see Justine?" my dad said, referencing my girlfriend.
"John, she makes Justine look flat."
"Doubt it..." my dad said.
"It's close." my uncle said. With that I got called away, by my girlfriend of three years, to sneak upstairs and screw. Justine's nickname all through high school had been "Bustine" because she had the biggest tits in the grade. Apparently, she knew how to use them because every girl gave her respect. She told me once about a fight she had with a senior when she was a sophomore. I didn't understand it at the time, but I have since gained incredible understanding. Justine had apparently battered the girl into oblivion and since that time, the girls of the school had given her respect. Justine wore a 36DDD bra, and often complained that it was too constricting.
It was two years later, Justine and I were 20 and Alisha (my oldest step-cousin, the one referenced by my uncle in the above story), and all of my cousins, my two sisters and the rest of the family were visiting with one another in Myrtle Beach. The children (the youngest of which was now 14) were all on the beach, with the older ones, (Me, Justine, Alisha, my two male cousins, my other step cousin, Alisha's sister Renee, who was also well-endowed but not like Justine or Alisha and my middle sister) had all wandered down the beach to drink and get stoned. This was the third night of our vacation and it was the first day we had the chance to see Alisha--she had flown in the night before from Vegas where she was living and working. It turns out my uncle had been right--when she and Justine ended up on the beach in bikinis, Alisha was bigger, her blonde hair falling over enormous round breasts that seemed to dwarf Justine's own enormous rack. Alisha was wearing a bikini though that accentuated everything and left nothing to the imagination. Justine, being with my family, was downplaying everything she had.
It was clear to me though that there was some "jockeying for position" going on and Alisha was clearly winning and it was getting Justine very jealous. No less than 3 guys hit on Alisha while we were at the beach. Justine has a great body--flat tummy, great legs and of course, awesome tits but Alisha was flaunting everything and she had a skanky, sexy look to her--sunburst tattoo around a pierced belly button and pretty tight body. She wore a lot of makeup and really did not have a problem showing skin.

Anyway with the night upon us and alcohol and pot loosening the tongues, the conversation turned catty between Alisha and Justine and the claws were beginning to get sharpened. They got into a heated conversation twice that required us separating them and then finally I heard Alisha say something that was clearly a challenge to Justine. Justine had finally had it. She told me to come with her and Alisha grabbed her sister and the four of us marched to the hotel, where Alisha went to the desk, came back with a key card and led us to an empty party room--fairly small for a party room, but carpeted and big enough for what I was expecting (a fist fight).
They both looked at me and Renee and said almost simultaneously--"No jumping in--just let this go until it's done..."