Lindsay Lohan got in trouble filming 'Mean Girls' because she kept trying to look Plastic before Cady's transformation

• Lindsay Lohan rushed to transform into the Plastics version of Cady on the set of "Mean Girls."
• According to a new behind-the-scenes book, the director "fought to stop her from curling her hair too early."
• One day on set, Lohan "snuck off and curled her hair," even though it wasn't needed for a scene.

"Mean Girls" star Lindsay Lohan was so eager to transform into one of the Plastics that she got in trouble for curling her hair too soon, according to a behind-the-scenes book.

"So Fetch: The Making of 'Mean Girls' (and Why We're Still So Obsessed With It)," written by Jennifer Keishin Armstrong and released on Tuesday, gives fans an inside look into how the hit 2004 movie came together.

Chapter five focuses on the transformations the stars underwent to embody the Plastics, the trio of glamorous high schoolers played by Rachel McAdams (Regina George), Lacey Chabert (Gretchen Wieners), and Amanda Seyfried (Karen Smith). This also included Lohan's character, Cady Heron, a formerly homeschooled teen who becomes part of their clique and morphs into a superficial Plastic as she spends more time with them.

According to the book, which included interviews with cast and crew members, hair was integral to the storytelling. Director Mark Waters was specific about how it should appear, to the extent that the film's hairstylist, Carol Hartwick, was always nearby to make adjustments.

Just as Cady succumbs to the Plastics' emphasis on appearance, Lohan was more than ready to ditch her character's plaid shirts and ponytail to dress as one of the cool girls.

"Lohan would constantly rush to wear pieces meant for later in the timeline or vamp up her hair when it was still supposed to be straighter and simpler," Armstrong wrote. "The wardrobe, hair, and makeup people had to keep pulling her back. Waters constantly fought to stop her from curling her hair too early in Cady's metamorphosis."

Waters explained to Lohan why her hair needed to be straight and simple until Cady's transformation later in the movie. But still, the "Parent Trap" star wanted her hair curled.

"Once, they shot half a scene with her hair straight, as planned," Armstrong wrote. "They broke for lunch. She snuck off and curled her hair. When they resumed shooting, Waters was pulling his own hair out, though he maintained his usual calm. 'Lindsay, what are you doing?' he asked. 'We can't shoot the scene with your hair curled. We already shot half without it.'"

Lohan started crying, resulting in the makeup team needing an hour to get her camera ready. Waters, who previously worked with Lohan for the 2003 "Freaky Friday" remake, reportedly didn't fume over the incident.

"She is watchable," Waters said, "but she's also a handful. The movie wouldn't be successful without that energy."

Even though the timing of Cady's transformation was out of Lohan's control, the actor did get to influence her character's hairstyle. According to the book, she took inspiration from Jennifer Aniston, whose haircut on "Friends" was well-known and sought after in the '90s.

"As Lohan's character transitioned from regular girl to Queen Bee, she asked for hair that looked like that of the ultimate hair icon at the time, Jennifer Aniston," Armstrong wrote. "Lohan's would be a longer, redder version, with extensions, of Aniston's famous layered look as Rachel Green on 'Friends.'"