Eagle-eyed fans noticed that at one point, the star tilts toward the camera to showcase the front of her oversize gray t-shirt, which features singer Bruno Mars. Joaquin Phoenix Says Lady Gaga ...

Sartorially, they’ve been suggesting the duet for the last few days. On Aug. 13, Gaga showed off a Bruno Mars T-shirt while playing the piano on Instagram, and the next day, Mars returned the ...