More Fun on the Road With Sofia Vergara and Reese Witherspoon

— -- Sofia Vergara and Reese Witherspoon are having too much fun.

Ever since the two funny ladies teamed up for their latest movie, "Hot Pursuit," they seem to be having a blast, both on set and off.

During a recent press stop, Vergara and Witherspoon showed off their lip-syncing skills with impromptu versions of Taylor Swift's "Trouble" and Miley Cyrus' "Party in the U.S.A."

Fortunately, they shared videos of their antics on Instagram Sunday.

Witherspoon, 39, uploaded a video of their performing "Party in the U.S.A."

While Vergara,42, posted a video of their dubbing "Trouble," which she captioned, "Lunch brake."

The two stars have developed a cozy friendship over the course of filming and promoting their latest movie, competing on-set to see who could bring the best baked goods, grabbing each others' bottoms on the red carpet and kicking back on the couch while doing phone interviews.

"I'm learning so much this press tour!" Witherspoon declared on Instagram. "Thank you @KarlaMartinezTV and @sofiavergara for teaching me some Latin dancing & feeding me obleas today!"