I see, I see, what you can't see...

"Uncle Leroy, are you in?" Asked a twenty-one year old girl at the front door.
"Erm, sure. I'll buzz you in. You know where to find me." A voice spoke through the intercom.

When the door swung open, the girl walked towards the basement while stepping over the piles of garbage scattered over the floor. When the girl walked down the basement stairs, she saw her scientist uncle Leroy working with a couple of vials. "Ah, Wendy. What can I help you with, dear?"

"Uncle Leroy, you know that I don't exactly stand out, right? Which is why my friends call me 'Wenda'?"
"Yes, I'm familiar with your situation."
"Well, I'm sick of it! I'd like to stand out for once! I mean, my friends ignore me, teachers ignore me, and... You're ignoring me!"

Leroy had turned back to vials. "Sorry Wendy, this stuff needs my attention for a minute. I guess this is kind of a gift for you, though." As Wendy looked in surprise, Leroy showed her a white vial. "I present to you, my 'Sparkle Sap'!"

"Sparkle Sap?" Asked Wendy.

"Yeah, I'm not quite sure about the name either." Leroy chuckled awkwardly. "But what it does is that it makes people feel more drawn to you. Bottoms up!" He cheered as he handed her the vial.
"Erm, thanks, Uncle Leroy. But are you sure it's safe? I don't want a repeat of the birthday cake incident."

"Relax, I assure you it's safe this time. Give it a shot."

Wendy made an awkward smile, and gulped the vial down in a single gulp.

"Atta girl! Now, you should see the results in about fifteen minutes."

"Thank you, uncle Leroy!" Wendy hugged her uncle tightly as she smiled. "But I've got to go. I'm supposed to meet up with my friends for the club. Assuming they haven't forgotten me again."

"Alright dear, take care." Wendy walked back up the stairs, when Leroy asked himself. "Wait, did I use the old formula, or the new one? Eh, I'm sure it's fine."

As Wendy walked down the streets, she indeed noticed that people were looking at her. Yet, it wasn't quite what she hoped it would be...

"What is that?"
"Must be some kind of movie promotion or something."
"God, don't let it be some kind of prank video..."

These comments made Wendy worry. "Good Lord, Leroy. What did you do this time? Did I turn purple or am I a lizard or- " Wendy stopped talking to herself when she saw her reflection in a store window. She saw her baggy clothes...

And literally nothing else!

"He made me invisible! Great, just great! That was the exact opposite of what I wanted!" Complained Wendy. She was about to turn back to her uncle, when an idea popped in her head. "You know, a lot of people have messed with me over the years. This could be the perfect opportunity to get back at everyone." She said to herself as she grinned slyly.