Collins and the show’s costume designer Marylin Fitoussi walk through Emily’s style evolution in season 4

Emily Cooper has a bit of a shift — both figuratively and literally — in season four of Emily in Paris.

And you see it in her wardrobe.

In an exclusive lookbook featurette shared with PEOPLE, Lily Collins, who plays Emily, and costume designer Marylin Fitoussi, walk viewers through this slightly more chilled-out version of the American marketing pro who has found herself in Paris in a variety of bold colors and patterns — and who this season even ventured out to Rome.

“Emily’s style evolution this year represents more of a calmness and centeredness within herself,” Collins says in the video.

Fitoussi points out the floral theme recurrent in the season, noting that Collins was a “little bud” in previous seasons who is now blossoming.

“She’s really coming into her own, asserting herself, becoming much stronger, with a style that is reinterpreting Parisian fashion codes,” Fitoussi, who has worked with Collins throughout filming the Netflix show, adds of Emily.

Collins also highlighted a few of her favorite looks from the season, including a Balmain suit from the Crazy Horse night. She wore a velvet suit with sparkling silver polka dots for the episode.

The actress also called out the black and white striped Harris Reed for Nina Ricci look that she wore for the Baccarat Ball.

“The Baccarat Ball, visually, it was just so perfect, it was stunning at the mansion,” Collins says.

But that’s not to say she didn’t also love her looks in Rome as Emily jetted off to a new city! Collins says her Roman looks were “so fun” as well, highlighting a couple Vivienne Westwood polka-dot looks that were inspired by Rome itself, as well as the film Roman Holiday.

“It was vacay mode for Emily!” Collins says, with Fitoussi adding, “Rome is an explosion of joy, love and Champagne.”