John Krasinski on 2½-Year-Old Daughter Hazel's Opinion of Her New Baby Sister Violet: 'I Think She's in Heaven'

John Krasinksi‘s new life as a dad of two girls has no doubt been a bit of an adjustment. But at least his older daughter Hazel is doing just fine with not being an only child anymore.

“She’s an amazing big sister,” The Hollars star, who welcomed daughter Violet with wife Emily Blunt in June, tells PEOPLE of his 2½-year-old little girl. “It’s a great age because she’s still young enough to not feel competitive with the baby, but still old enough to recognize how adorable the baby is. I think she’s in heaven.”

Is there something that Hazel does with her sister that’s especially cute? (Spoiler alert: Of course there is.)

“Honestly, just a hug is heartbreaking,” adds the proud dad, 36. “When Hazel gives a hug to Violet, right there in that moment you can see this huge relationship that will last much longer than I’m around … it’s so beautiful.”

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Krasinski, who was recently revealed to be playing the titular character in Amazon’s upcoming Tom Clancy-inspired series Jack Ryan, shared that Hazel is developing quite the personality.

“She’s a big talker, she can be very chatty,” he says. “She’s in her own little world, and we love being in it.”

The actor admits that he and Blunt, 33, definitely have a girly girl on their hands (according to Krasinski, Hazel is into “all the girly stuff”). But she is also showing signs of a budding artist.

“She’s really just mostly into drawing right now,” Krasinski shares. “She’s very creative, so it’s very sweet.”

Hazel isn’t quite to the point where she recognizes her parents’ voices in animated films they’ve done, but the star of this summer’s dramedy The Hollars — a film he also produced and directed, which premieres Friday — says his daughter definitely knows something is up.

“When she saw a poster for 13 Hours, she was like, ‘Daddy,’ ” Krasinski says, mimicking his daughter pointing. “She knew that was me on the picture, but I don’t think she knew why my picture was on a bus stop or a bench.”

The actor admits parenting two kids helps him keep in shape with the physique he notably acquired to play his character, former Navy SEAL Jack Silva.

“It’s a great inspiration to stay in shape. Hazel is the perfect example — [even] in the last two years, it’s harder and harder to pick her up,” he says, adding that he and his little girl take bike rides together now that she’s old enough, with Hazel on the back of the bike, and that she “absolutely loves it.

“I don’t want to pick up my kids and throw my back out,” Krasinski continues. “It’s nice to stay in shape because it allows me to keep up with them.”

For more from John Krasinski, pick up the latest issue of PEOPLE, on newsstands Friday.

— Jen Juneau with reporting by Jodi Guglielmi