invited to a cool kid party???

i sound like a fuckin middle schooler when i say that, but im genuinely terrified about this. so this friend group that i would be vaguely apart of in highschool (were all 18/19 yrs) are a bunch of these girls who ide talk to and they seem to like my company (probably because ide only interact with them for a fixed amount of time) invited me to a friendsmas. i’ve always been so intimidated by these friends because they’re just at a level of cool ive always aspired to and by cool i mean they’re all really witty and into dancing and talk about all these guys that hit up their dm’s. i feel like they like me because they’re sorta infatuated by me, like they follow my finsta which i honestly try to keep moderately funny to compensate for the sad boi hours and they’re always commenting and stuff. also ide say physically im honestly at their level of pretty, and they’re always telling me im so pretty but i just feel sooo out of their league. i know all the stuff about “being yourself” and shit but im scared that my cool is just gonna fly out of my head the minute i step into that party and im just gonna look like a dumbass the whole time and theyre gonna think im weird or ill ruin the whole vibe AND the friendship or something. usually, im fine with other people and can actually be the light of the party and take control, but they’re usually a bunch of furries or boys or in general average people that i can handle. im sooo scared but i think im definitely going. i think there might be drinks involved which might be easier, but i dont know if i can handle this, i hate feeling insecure. how can i feel better about this???