Is the name too "masculine"?

My little brother came up with the name Kennedy after we found out I'm having a girl. My mom, BF, BF's family, and everyone except two people (guys) have absolutely loved the name for her. Ever since those two guys have said its a boy name it made me question her name, but I can't picture that name for a boy. And I'm in love with it so I'm not changing it, just want to here some of your opinions. :)