It's called customgothic and it seems to be a proprietary font, as written here
http://www.dafont.com/forum/read/14810/hollister-font-please-help-me?highlight=44349#44349Carattere Identificato: Custom Gothic
Modificato su 13/09/2012 alle 19:56 da drf_
I just checked the CSS, it's used for the top menu, and it's indeed Custom Gothic.

Fuso orario: CEST. Ora sono le 21:51