Bar or Bat Mitzvah.
Noone is more trendy than your Young Adult.

Bar and Bat Mitzvahs are no longer the simple family gatherings they used to be. Today’s Mitzvah celebrations have evolved into lavish and detailed events among Jewish youngsters. While Mitzvah in fact means “commandment” in Hebrew, it also means "a good deed". Guests can be asked to make donations to a charity rather than give gifts. It is a reminder to the youngster that Mitvah, while a true celebration, is about taking on the responsibilities of adulthood.

Emerging party trends include video invites serving both, as an invite and as a keepsake. Many celebrations feature large video screens that are interactive with the party goers or stationary cameras that take candid shots of the children as they make faces in front of it.