Yes. Lady GaGa and Jessie J are sisters.
yes she has two.
she has a half sister amy who is 10
Jessie J does not have a twin sister she does have two sisters but they are five and seven years older than her.
Jessie J has a younger half sister called Amy who is 10.
rachel and hannah
No they are not brother and sister cuz one of ,y friends told me Justin Beiber and Jessie J kissed
Jessie J has two sisters Rachael and Hannah who are five and seven years older than her.
What do you think? ¬_¬Katy is American, and Jessie is EnglishNo. Just no.