Where can my family and I possibly see some celebs in LA around Christmas Time?

This is my 4th time to LA - went when I was 11 & 12 in 1993, 94, for my honeymoon in May 2009, and now My husband, son, and I are going Dec 23 - 30 of this year for Christmas! Spotted a couple B/C Lister's in May, but would really be something to spot one with my family! Going to try and stand outside of a premier if there is one.....any ideas would help! Not looking to bother them, just see them.