• Reese Witherspoon said it's "really hard not to laugh" while filming fighting scenes with "Morning Show" co-star Jennifer Aniston
  • The "Legally Blonde" star also described her longtime friend as "one of the funniest people I've ever met"
  • Aniston recently admitted that it was "hard" to fake being mad at Witherspoon

Reese Witherspoon finds filming fighting scenes with her "Morning Show" co-star Jennifer Aniston challenging.

Decades after playing sisters Jill and Rachel Green in "Friends," Witherspoon, 45, and Aniston, 52, reunited onscreen in the Apple TV+ series "The Morning Show," which returns with its second season this week. Aniston plays Alex Levy and Witherspoon plays her relatively new co-anchor Bradley Jackson, both of whom exposed a toxic workplace culture at their television network in Season 1.

In a new interview, the "Legally Blonde" star discussed what it's like to go toe to toe with Aniston in the more explosive, combative scenes on "The Morning Show," explaining that they find it difficult not to laugh while filming their characters' tense arguments.

"I have to say, when we do our fighting scenes, it's really hard not to laugh and crack up, because we have to be so mean to each other," Witherspoon told People. "We just love each other [so] much."

Witherspoon also described her longtime friend as "one of the funniest people I've ever met."

"Her delivery is perfect on every joke," Witherspoon said of Aniston.

The "Murder Mystery" star had the same opinion as Witherspoon when it comes to their onscreen fighting scenes. During an interview on "Jimmy Kimmel Live!" Monday, Aniston admitted that it was "hard" to fake being mad at Witherspoon.

"It's always fun to fight with Reese," Aniston told host Jimmy Kimmel, "because she's such a sweet burst of sunshine that she's, you know, not someone you wanna go scream your head off to. And I usually always end up bursting into laughter at some point. It's just too hard to be that mad with each other. But we do it."

In 2019, Witherspoon recalled meeting Aniston on the set of "Friends" during an interview by Natalie Portman for Harper's Bazaar.

According to the "Big Little Lies" star, she was 23 and had just given birth to her daughter Ava. Witherspoon said Aniston was "so sweet" to her during their time together on set.

"I was really nervous, and she was like, 'Oh, my gosh — don't worry about it!' I marveled at her ability to perform in front of a live audience like that with no nerves. They would change all the lines and she was just so effortlessly affable, bubbly and sunny. ... We've been friends ever since," Witherspoon shared.

During Aniston and Witherspoon's recent joint interview with Entertainment Tonight, the latter shared that she couldn't help but cry while watching the "Friends" reunion special, which premiered on HBO Max in May.

"I cried three times watching you guys," Witherspoon said. "It reminds me of a time in my life. So y'all lived it, but we watched it, and it was important to me. I remember having a little baby and being a mom and you guys were my friends."

"The Morning Show" Season 2 premieres Friday on Apple TV+.

Reese Witherspoon, Jennifer Aniston Reese Witherspoon and Jennifer Aniston will be teaming up with Apple for their upcoming series. Pictured: Witherspoon and Aniston attend ELLE’s 18th Annual Women in Hollywood Tribute held at the Four Seasons Hotel Los Angeles at Beverly Hills on Oct. 17, 2011 in Beverly Hills, California. Photo: Todd Williamson/Getty Images For ELLE