<P> Child actress Brighton Sharbino was cast to portray 10 - year - old Abby for the season 10 episode `` Hit and Run '' , which featured several flashbacks to a young Abby . Sharbino , who strongly resembled Perrette , reportedly spent time with the latter `` in part to pick up on the NCIS vet 's mannerisms and such . '' </P>
<P> Child actress Brighton Sharbino was cast to portray 10 - year - old Abby for the season 10 episode `` Hit and Run '' , which featured several flashbacks to a young Abby . Sharbino , who strongly resembled Perrette , reportedly spent time with the latter `` in part to pick up on the NCIS vet 's mannerisms and such . '' </P>
how old is the character abby on ncis
how old is the character abby on ncis
10 - year - old
10 - year - old