The two Hot Pursuit costars have a lot to say about each other's eating habits (and a certain actress's caffeine dependency)

By Michelle Tauber and Maria Yagoda
Updated May 09, 2015 01:10 PM
Credit: Dimitrios Kambouris/WireImage

While filming their new comedy, Hot Pursuit, Reese Witherspoon and Sofia Vergara got very close – throw-the-other’s-bachelorette party close – and naturally, there were a few surprises along the way.

“She eats a lot! She’s very delicate and petite, but she eats a lot,” Vergara tells PEOPLE in a joint interview with Witherspoon in the magazine’s new issue.

“This one eats cake,” Witherspoon adds. “I’ve never seen somebody eat so much cake in my entire life.”

Aside from learning that we’d like to have dinner with both actresses, we also learned that Witherspoon has another vice – caffeine.

“I’ve never seen someone drink more coffee than you. I mean, I’m the Colombian one,” Vergara says, though maybe she’s partly to blame for Witherspoon’s obsession. During all the Hot Pursuit press madness, Vergara introduced her costar to a “weeny secret weapon called Cuban coffee,” Witherspoon wrote on Instagram. “Apparently it makes you put exclamations on everything!!!!!!!”

“My husband gets mad at me. He’s like ‘You drink too much coffee,'” Witherspoon says. “I try to only have two cups in the morning and that’s it, but it gets to be 4 o’clock and I’m so tired.”

Sorry, Jim Toth – we side with your wife on this one. Afternoon coffee is essential.

For more from Witherspoon and Vergara, pick up the latest issue of PEOPLE, on newsstands Friday

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