Her huuuuuge heart, of course! And that was exactly what was on display last night at the Beverly Hilton for Operation Smile's 8th Annual Smile Gala in Beverly Hills last night. Well, that and her enormous tatas. Jess was…

When Katie's not around, Tom prefers to use the backdoor. We spotted him heading up the back steps at the Beverly Hilton hotel. Earlier our cameras were rolling as Tom stopped by Steven Speilberg's house in Pacific Palisades. Think…