Robin's party was going great! Her friends had just had cake and ice cream and were giving out presents.
"Oh wow! Thanks Stacy! These new jeans will look great on me!", Robin exclaimed.
"Here, I got this for you when we were on our trip to New Orleans." Tammy said, handing Robin a gift wrapped present.
"Ooh!" Robin said as she grabbed the box and begans tearing the wrapping paper off of it. Beneath was a white box and opening it she saw inside an odd object. It looked like a stick figure made of sticks and twine with a large gemstone in the center. Robin was perplexed. "What is it?"
"It's a beauty charm I got at this crazy voodoo shop we saw. I just HAD to buy something there, it was just too weird NOT to get! Don't worry though, I also got you THIS!" Tammy exclaimed as she held up and incredibly cute denim skirt.
"OH WOW! Thankyou!" She said as she hugged Tammy.
Picking the box back up, Robin examined the strange charm. "Wow. This thing IS weird. I wonder how it works..."
Tammy giggled "Oh c'mon, it's just a charm. I wouldn't think too hard about-" she stopped herself short though as she noticed something weird about Robin's hand. "Hey Robin, when did you start tanning?"
"Huh?" Robin said "I haven't. I mean I thought about it but...why?"
"Well I mean your arm it's all tanned and stuff."
"What do you-" Robin looked at her arm and noticed it was tanned...and tingling...and the tan was getting deeper. "What in the-" she put down the charm and looked at her hand. It was dark. Darker than any tan she had seen. Heck it was darker than most black girls she saw, being a shade or two deeper than milk chocolate.
Then she saw the rest of her arm. It was also tanning and becoming the same deep shade of brown right before her eyes. "Wh-what's happening! You guys?"
"Woah! That's quite a tan you've got there!" Candy said
"I don't think that's a tan, Candy..." replied Stacy
"Well then what is it?"
"THAT'S WHAT I'D LIKE TO KNOW!" Robin shouted in panic as the darkness began to spread all over her body. Her breasts grew a larger from their meager A-cup size to a solid C-cup and she began to grow taller. She felt the darkness creep down her backside as her hips began to widen. Meanwhile it crept up her neck and her face began to change. Her bleached blonde hair darkened rapidly and turned a deep black, becoming a bit coarser and very very straight. Her face became a little longer and her lips began to grow larger and larger until they were quite full. Her nose widened and flattened out a bit and her forehead became more sloped and prominent.
"What jus-" Robin stopped herself and covered her mouth. Her voice had changed, becoming a good bit deeper.
"Robin, I think...you're turning black." Stacy stated, unable to believe it herself.
"WHAT?! But I ca-I can't...how is..." as she stuttered her hips continued to widen. As the darkness crept over her backside she felt her butt grow larger and larger, sticking out from beneath the skirt she was wearing. "EEEEEEK!!!" she grabbed her growing butt in disbelief. As it continued down her legs, her thighs thickened to accommodate the enlarged butt and her legs lengthened until finally it reached her toes.
Standing in Robin's place was a beautiful shapely black girl with straight black hair that went just past her shoulders and a huge butt.