Didn’t know Reese Witherspoon‘s real first name? Neither did her Morning Show pal, Jennifer Aniston!

The longtime friends and co-stars recently sat down for an interview with LADbible, where they tested their friendship. And for the 56-year-old Friends alum, she learned something very new about the 49-year-old Legally Blonde star!

Keep reading to find out more…

Reese asked Jennifer to choose which of three names (Jane, Jeanne or Joan) was her middle name.

“It’s Jeanne. That’s confusing. I’m Laura Jeanne.”

“Laura Jeanne?” Jennifer asked.

“That’s my real name,” Reese said.

“Who’s Laura? Who the hell’s Laura?” Jennifer asked in disbelief.

“Wait, Laura Jeanne? I’m not calling you that from now on! Come on, Laura Jeanne. Where did Reese come from?”

Reese said that it’s her middle name, which Jennifer then clarified: “Oh, like Norma Jean?”

“Yeah. I’m Laura Jeanne Reese,” Reese said, adding that she didn’t change her name when she reached Hollywood, it was just “always Reese.”

Jennifer also revealed her own middle name to be Joanna.

“Jennifer Joanna. J.J.. Does anybody call you J.J.? Well I do now,” Reese remarked. Watch above!

Find out the real names of more celebrities in Hollywood that might surprise you.