Nicholai Olivia "Nicky" Hilton  (b. 1983) and two brothers, Barron Nicholas Hilton II (b. 1989) and Conrad Hughes Hilton III (b. 1994). Hilton is of  Norwegian ,  German , English,  Irish , and  Italian  ancestry. [ 3 ]  She is a niece of two  child stars  of the 1970s,  Kim  and