@entertainmenttonight: Wendy Makkena is dropping some serious 'Sister Act' lore. While it’s well known that Andrea Robinson is the singing voice of Sister Mary Robert, Wendy is revealing for the first time that some of the vocals in the film are actually hers. She explains during an ET Then & Now that rather than lip-syncing to Andrea's vocals, filmmakers had her sing live along with the tracks. From there, some of Wendy’s live singing was mixed with Andrea’s vocals for the final film. "To Andrea's credit, I'm sure all the really good licks and all the really good stuff was all her," Wendy says, but she can pinpoint several moments in the 1992 film that feature her own voice. "I think 'My God' probably was mostly me because it was a really simple song, there was no technique needed." #wendymakkena #sisteract