Chanel West Coast brought the cowgirl spirit to the “TMZ After Dark” tour … singing a couple of country tracks for riders and jumping on a mechanical bull!

We’ve expanded the dates for our newest tour because of popular demand … and, every celeb in Los Angeles wants a chance to host the event — with Chanel taking her turn Saturday night.

Check out the video … the former “Ridiculousness” personality leads the group in song, encourages them to shout out a famous phrase from “Star Wars” and even leads them in a hyped rendition of Shaboozey‘s “A Bar Song (Tipsy).”

While Chanel hosted last night, Jerry O’Connell was on the bus Friday … and, he gave us a full rundown on his favorite parts of the new tour.