Photo: Ryan Muir/NBC/NBCU Photo Bank/Getty

“They put him inGeorge Clooney’s suit,” Kravitz told hostJimmy Fallon, referring toClooney’s portrayalof the Caped Crusader from the1997 filmBatman & Robin.
She recalled the experience as being “funny” at first, since Pattinson, 35, was outfitted in thenippled Batsuit"only from the waist up," adding: “He was wearing sweatpants at the bottom!”
For more onThe Batman, listen below to our daily podcast on PEOPLE Every Day.
She then coined the phrase “Casual Batman” to describe the eccentric ensemble.
Jonathan Olley/Warner Bros.

“I was so scared that I was just going to be thinking, ‘Oh my god, that’s Rob dressed as Batman, that’s weird!’ " Kravitz continued. “But he was so wonderful that I totally forgot it was him, which is really impressive.”
Later, when Fallon suggested various ways he would get into the character of Catwoman if given the chance, he mentioned drinking milk out of a bowl.
“I did that!” Kravitz said, later adding, “I’m method, dude.”
TheBig Little Liesstar is following in the footsteps ofEartha Kitt,Julie Newmar,Halle BerryandMichelle Pfeiffer, who have all previously played Catwoman in prior incarnations of the Batman franchise.
The film also stars Paul Dano as the Riddler andColin Farrellas the Penguin, as well as Peter Sarsgaard, Jeffrey Wright and Andy Serkis.
RELATED VIDEO: Zoë Kravitz Says It Was ‘Really Special’ to Have Jason Momoa’s Support atThe BatmanPremiere
In an interview withEntertainment Weeklyearlier this month, costars Kravitz and Pattinson reflected on their memorable chemistry test together.
“The chemistry read was really intense,” said Kravitz. “Rob was wearing the Batsuit, and it was a proper camera test with the DP there and everything on a soundstage. It wasn’t just reading lines in a room. So it was intimidating, to say the least.”
Pattinson was already cast at that point. He remembered, “The first time I’d even said lines from the script was in Zoë’s screen test. They had this idea that they wanted me to be taller at the beginning, so I basically had high-heeled sneakers on, and I’m tottering around in this strange Batman outfit.”
Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.
“The camera’s not even on me, it’s on the back of my head, and I’m literally having this major panic attack, just looking for emotional support from Zoë, who’s trying to get the part,” he continued.
Kravitz said of her onscreen chemistry with theTwilightalum, “There could be a lot going on in a scene, but if I was able to connect with Rob and look into his eyes, it would immediately bring me into the moment. I saw a look in his eye that I hadn’t seen before. Seeing something new and very vulnerable as well was really beautiful.”
The Batmanis in theaters March 4.
source: people.com