Well, I personally think that would be a little awkward for your friend. But it all dependson how old your brother's sister friend is and if youthink she is the right one.
She would be your step-sister
Jonas Brothers don't have a sister
2 brothers & 1 sister
Jonas Brothers haven't any sister.
1 Sister and 5 Brothers
3 brothers and one sister
No. The Jonas Brothers do not have a sister.
two brothers and one sister - I know one of his brothers is younger but I don't know about the other. His sister is younger too
6 brothers and 2 other sisters
Brett Harts Brothers and sister is Heart Destiny
Yes. He has 1 younger sister and 5 younger brothers.Ashton Merrygold has 1 sister and 5 brothers for all you who wanted to know :)EDITED: Aston, Not Ashton.
2 brothers