That's not all ... Cara Delevingne also attended the big dinner date. FYI, Cara was spotted leaving the studio with Taylor last week -- not long after the singer announced she's hard at work on re-recording her "1989" album.
Don't forget ... Taylor, Channing, Zoë, and Cara were all together last month for Jack Antonoff and Margaret Qualley's wedding in New Jersey, too, so they've all been keepin' up with one another lately.
BTW, Channing's already proven himself to be a total Swiftie with his wardrobe for Taylor's L.A. shows!!! Thankfully, for all involved, his 'fit for Monday's dinner was much less fanboy.