The day before, the 32-year-old singer was spotted to people shopping at a Walmart in Tewksbury, Mass.
Agron was not a series regular on Season 4.
Zambrano will be present with principal cast.
Besson reportedly wrote Belle with Agron in mind, wanting her to be in the film after seeing her perform on Glee.
In early 2011, Agron met actor at an Oscars party and the two were linked in April that year; reportedly, Evans' brother was a fan of Agron from Glee and supported the idea of the couple.
In a database held by the , family trees including 5343 and 1325 both of which include Gershon Agron, Martin Agronsky, and Dianna Agron descend from Shmuel Labe Agronsky.