After spending so much time together on the set of A Wrinkle in Time, it’s clear that Oprah, Reese Witherspoon and Mindy Kaling got to know each other super well. So well, in fact, that the ladies have no trouble busting out spot-on impressions of each other.

The trio appeared on The Late Late Show with James Corden last night and revealed that Witherspoon was the mom of the friend group, always taking care of things and organizing outings when they weren’t filming.

This got Oprah to channel her inner Reese, putting on a Southern accent (with plenty of y’alls) to mimic the actress. Witherspoon quickly followed suit, imitating both of co-stars.

Watch the hilarity unfold below.