Reese Witherspoon is pretty much a household name, but that doesn't mean she doesn't get nervous around other stars.

In the Nov. 2019 issue of Harper's Bazaar, the 43-year-old actress dished on what it was like to meet the one and only, Jennifer Aniston, who she will star alongside in the new Apple TV+ series "The Morning Show."

"We met on the set of 'Friends'; I played her sister," the "Big Little Lies" actress spilled. "I was 23 years old and had just had a baby. I was nursing Ava on set, and Jen just kept going, 'You have a baby?' I was like, 'I know, it’s weird.' And I remember her being like, 'Where are you going?' And I was like, 'I’m pumping!'"

"She was so sweet to me," she continued. "I was really nervous, and she was like, 'Oh, my gosh—don’t worry about it!'"

Witherspoon went on about her admiration for the "Friends" actress and how she was so "bubbly." Despite being nervous, though, the duo developed a friendship that has lasted even to this day, according to the "Legally Blonde" star.

Their friendship likely made going to work on "The Morning Show" all the more fun. Aside from sharing a set, the two also researched their roles for the upcoming show together and came to some shocking realizations.

"I think most people would find it shocking that women in that position, of what we perceive as power, are looked at as expendable," she shared, adding, "Women who've worked so hard to become incredible journalists and to ascend to a position of what seemed like power are relatively powerless."

The November 2019 issue of Harper's Bazaar hits newsstands Oct. 22.

Reese Witherspoon
Pictured: Reese Witherspoon attends Hello Sunshine x Together Live at Auditorium Theatre of Roosevelt University on November 12, 2018 in Chicago, Illinois. Getty Images/Robin Marchant