Emily in Paris stars (and real-life besties) Lily Collins and Ashley Park brought their fun energy to the Bravo Clubhouse for Sunday night’s (Sept. 22) episode of Watch What Happens Live. But things got a little awkward when Andy Cohen‘s “big reaction” derailed Collins’ story about her time working with Julia Roberts on Mirror Mirror.

Toward the latter half of the episode, Cohen asked the actress for her favorite memory from starring opposite Roberts in the 2012 fantasy film, which was based on Snow White.

“OK, so Julia finished filming a day before me and she was going —” Collins began, but she was cut off when Cohen interrupted, “Noooo!”

The Blind Side star abruptly stopped her sentence and stared blankly at the talk host before quietly asking, “What?” prompting Cohen to explain that he was “reacting” to her story.

“Oh, oh!” Collins said. “I was like, ‘No, she did [finish before me].’”

“She was leaving on a vacation with her kids and her husband the next day but they didn’t finish my coverage of a very important scene,” Collins continued. “So she pushed her vacation to come to set, not be on camera, but be there for my off-camera and that taught me a huge lesson about showing up for your co-stars.”

Cohen, for his part, clarified why he initially reacted the way he did.

“I thought you meant she finished all of her scenes before you started so you never interacted. I was like, ‘I don’t know how that would’ve happened,'” he said. “That’s why I had such a big reaction.”

Collins, being the class act she is, told Cohen that she loved how “invested” he was.

Sometimes the most awkward moments on WWHL turn out to be the best!

Watch What Happens Live airs Sunday through Thursdays at 10 p.m. ET on Bravo. New episodes are available to stream the next day on Peacock.