<P> Barney has three half - siblings : James ( played by Wayne Brady ) , from his mother 's side , a gay African American who is married to a man , with whom he has an adopted son and daughter ( as revealed in the season seven episode `` The Rebound Girl '' ) ; Carly ( played by Ashley Benson ) , a university student from his father 's side with whom Ted has a one - night stand in `` Ring Up ! '' , and Jerome Jr . ( JJ ) , from his father 's side , who is 11 . He also has a female cousin named Leslie , with whom he accidentally grinds in a nightclub , as seen in the episode `` Okay Awesome '' . </P>
<P> Barney has three half - siblings : James ( played by Wayne Brady ) , from his mother 's side , a gay African American who is married to a man , with whom he has an adopted son and daughter ( as revealed in the season seven episode `` The Rebound Girl '' ) ; Carly ( played by Ashley Benson ) , a university student from his father 's side with whom Ted has a one - night stand in `` Ring Up ! '' , and Jerome Jr . ( JJ ) , from his father 's side , who is 11 . He also has a female cousin named Leslie , with whom he accidentally grinds in a nightclub , as seen in the episode `` Okay Awesome '' . </P>
who plays barney 's sister on how i met your mother
who plays barney 's sister on how i met your mother
Ashley Benson
Ashley Benson