Katherine Waterston sang Streisand on Fantastic Beasts set

The set reminded both Waterston and Redmayne of "old Hollywood".

Actress Katherine Waterston burst into song in between takes on Fantastic Beasts and Where to Find Them because the set was so reminiscent of "old Hollywood".

Filmmaker David Yates recreated 1920s New York City in a London studio for the shoot, and the set was so well done, Waterston was inspired to belt out lyrics from Hollywood icon Barbra Streisand's Don't Rain On My Parade.

"I can't sing at all!", Katherine confessed on U.S. breakfast show Today. "It just felt like that wonderful old Hollywood thing of a set. As far as the eye could see was art deco buildings and the Lower East Side of Manhattan..."

Her co-star Eddie Redmayne laughed, "She was running up and down the streets of New York, but outside of Watford in London!"

"It is something about those sets, it felt old school Hollywood," he said. "The scale of it and the vibrancy of it, it was unlike anything we had ever worked on."

Fantastic Beasts and Where to Find Them, based on the Harry Potter spin-off book by author J.K. Rowling, stars Redmayne as 'magizoologist' Newt Scamander, who battles to keep the peace within New York City's secret society of witches and wizards. The film is set 70 years before famous boy wizard Harry is born.

Waterston co-stars alongside fellow castmates Colin Farrell, Ezra Miller, and Alison Sudol.

The movie, which will hit theatres later this month (Nov16), is the first of five planned films in the new franchise. The second Fantastic Beasts movie is already in pre-production, and due in cinemas in November, 2018.

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