You know you won’t be able to convince your sister, and disguises or sneaking it is unlikely to work. But maybe if you had some inside help then perhaps you’ll be able to pull it off.
That being, maybe you could try to convince one of her friends to help you. They might just tell on your, but it’s more likely to work than aiding your sister herself.
You think about her friends and you decide which one to ask. You don’t exactly have a guestlist of who will attend, but you know a few of her friends who you are sure will most likely be there.
First there is Chloe, a very fashioned oriented girl and is always looking for someone to use as a living canvass for her to test her new styles on. She’s friendly if kind of snobby and airheaded at times when it comes to things which aren’t fashion related. Still, maybe if you let her use you for her dress ups then she’ll help you,
Darcie is a somewhere nerdy yet still popular girl. She’s really proud of her high grades and valedictorian status. She can be very stuck up and snobby but her keen intellect more than makes up for it. She’s is able to be one of the most popular girls in school both due to their attractiveness and her status as student body president. Your sister was her campaign manager as well. She is keen on social experiments and other crazy stuff, so maybe if you tried to make this part something like that she’s go along.
Hana is probably the nicest of your sister’s friends, to you anyway. She’s a very friendly and outgoing girl who loves music and is always going to the latest concert. She is known for her keen taste in music. You know she’s been sympathetic to you in the past, and she does mostly leave you alone as well, so maybe she might be more sympathetic to your fears of backing down on a dare.
And then there is Melissa, probably the most social media minded of her friends. She can constantly be found on her found typing on twitter or Facebook or whatever. She knows so many hashtags it’s kimd of scary. You also know she likes watching videos of people doing stupid dares and does take dares really seriously, so maybe she will understand your motivations.