Resolved Question: Crashing a party in the Hamptons?

so my sister’s friend’s FRIEND is veryyy wealthy and happens to be throwing a sweet 16.
SHE GOT THE JONAS BROTHERS TO PLAY AT HER PARTY!
therefore, my sister and I (who never met the girl) really kind of want to get on the list
that being unlikely…
how do we crash this kind of party?
yeah they’re on tour right now but her sweet 16 is after the tour ends… its not for a few months =)
im 15 btw
but
that wasnt the question!!