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Lindsay Lohan Was ‘Pregnant as Hell’ at Time of “Mean Girls” Cameo, Says Reneé Rapp: ‘She’s the Coolest’

Rapp appeared on 'Watch What Happens Live with Andy Cohen' on Sunday and opened up about having Lohan appear in the new 'Mean Girls' movie

<p>Kristina Bumphrey/Variety via Getty Images; John Nacion/Getty Images</p> Reneé Rapp at the premiere of

Kristina Bumphrey/Variety via Getty Images; John Nacion/Getty Images

Reneé Rapp at the premiere of 'Mean Girls'; Lindsay Lohan at the premiere of 'Mean Girls'

Lindsay Lohan was very pregnant during her cameo in the new Mean Girls movie, according to Reneé Rapp.

Rapp, 24, appeared on Watch What Happens Live with Andy Cohen on Sunday and was asked what it was like having Lohan - who welcomed a baby boy with her husband Bader Shammas in July - appear in the new musical adaptation.

“Yeah, I was so excited. I mean she’s the coolest obviously and it was also like such a blueprint,” Rapp, who plays Regina George in the Mean Girls musical, said. “She was also pregnant as hell at the time and so I remember like, I love babies, I’m ageist.”

<p>Jason Mendez/Getty Images</p> Reneé Rapp, Lorne Michaels, Tina Fey and Lindsay Lohan at the premiere of 'Mean Girls' in New York City on Jan 8, 2024

Jason Mendez/Getty Images

Reneé Rapp, Lorne Michaels, Tina Fey and Lindsay Lohan at the premiere of 'Mean Girls' in New York City on Jan 8, 2024

Related: Mean Girls Cast: Where Are They Now?

The star went on to add, “So I was so excited that she was there because she’s Lindsay Lohan and she’s so cool and hot but also like, she was pregnant.”

Rapp's role was originally taken on by Rachel McAdams in the 2004 film, which saw Lohan star as Cady Heron. For the 2024 version, Angourie Rice has stepped into Lohan's shoes.

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In an exclusive conversation with PEOPLE, Rice shared a similar positive sentiment about working with Lohan, saying that having her on the set "meant so much to me."

"It is such a rare experience to really get in the head of a character and then meet someone who's done the same thing," said Rice, 23. "Just to have that shared experience, it means a lot."

The star further highlighted, "But to know that Cady has been a part of so many actors' lives and so many actors have delved into that character — she's bigger than the actor in a way."

"It means a lot that I get to share that with so many special performers, especially Lindsay," Rice reflected.

Related: Tina Fey, Maya Rudolph and Amy Poehler Have Mean Girls Reunion at the Movies

The film's directors, Samantha Jayne and Arturo Perez Jr., agreed to Variety that having Lohan on set was quite an experience.

"I don’t remember the exact moment, but I remember the feeling when I learned Lindsay was going to be a part of it. Everyone was so happy — there was a special energy that day," Jayne noted to the publication.

Perez remembered the secrecy surrounding Lohan's appearance, saying, "It was very NDA-heavy and only on a need-to-know basis. I think it had sprinkled to some of the cast. I actually do remember a couple people snuck in that day, now that I’m thinking of it."

Mean Girls is currently in theaters.

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