Jennifer Aniston was there for Reese Witherspoon when she made a cameo on Friends.
If you forgot, the 46-year-old Legally Blonde actress appeared on the legendary sitcom in 2000. She played Jennifer‘s sister Jill.
During an appearance on Late Night with Seth Meyers, Reese revealed how her on-screen sister helped calm her nerves.
Read more about Jennifer Aniston’s advice on the set of Friends…More Here! »