Q. I was attending some time ago a chupa and I witnessed something strange.The Shamash used a (presumably burnt out) light bulb as the glass keli (utensil) the Groom was to step on and brake at the end of the wedding ceremony. Although it was covered with a napkin, we all realized what it was, due to the exploding noise peculiar to that action. Was that a correct thong to do?
A. Although the breaking of earthenware utensils at the prior Tenaim ceremony, some Poskim maintain that it could be done or should be done even with partially broken vessels (Pri Megodim 560: M’Z 2), the glass ones used at the chupa should be complete, since at that time the simcha of the Chosson is greater.
Horav Aharon Miller Shlit’a maintains that it is better to use a complete and useful glass vessel as a Zecher Lechurban or remembrance of the destruction of the Beis Hamikdosh at the greatest of our Simches.

Rabbi A. Bartfeld as advised by Horav Aharon Miller Shlit’a