Taylor Swift Secretly Promoted Calvin Harris' New Collab with Rihanna

Taylor Swift walks behind Lily Aldridge after lunching out together in Los Angeles on Thursday (April 28).

The two pals picked up a bite to eat just hours after Taylor‘s beau, Calvin Harris, dropped a preview of his new song collaboration with Rihanna.

PHOTOS: Check out the latest pics of Taylor Swift

While no one noticed it then, Taylor was actually promoting the song during Coachella!

The internet, including us, were too focused on her platinum hair that we didn’t notice the emblem on her jacket — which is the same as the single’s artwork!

FYI: Taylor is carrying a Rebecca Minkoff crossbody bag.

30+ pictures inside of Taylor Swift and Lily Aldridge out to lunch…