The surprising pair took Cooper’s Ducati to the celebrity hot spot, with Gaga, 30, looking every part the biker babe!
Both wore leather jackets (Cooper's coat had Ducati emblazoned on the sleeve) and motorcycle helmets (safety first!), but Gaga went one step further, rocking a black tee, ripped denim and studded black boots.
Gaga has been playing around with a much more subdued look as of late. In fact, she went makeup-free last month while celebrating her 30th birthday. See the video below for more, including her sweet message to fans.