Eva Mendes errands pink Beverly Hills

Eva Mendes is a modest Hollywood star who believes you're never too good or too famous for an acting class!

Ryan Gosling's girl attended a private lesson Saturday in Beverly Hills. Meanwhile, the actress has a French film in theaters, which debuted in Cannes, called Holy Motors.

Even if you do speak French, you probably won't understand what the movie's about -- it's a tad artsy ... but here's the film's official synopsis to help you out:

"From dawn to dusk, a few hours in the life of Monsieur Oscar, a shadowy character who journeys from one life to the next. He is, in turn, captain of industry, assassin, beggar, monster, family man... He seems to be playing roles, plunging headlong into each part - but where are the cameras? Monsieur Oscar is alone, accompanied only by Celine, the slender blonde woman behind the wheel of the vast engine that transports him through and around Paris. He’s like a conscientious assassin moving from hit to hit. In pursuit of the beautiful gesture, the mysterious driving force, the women and the ghosts of past lives. But where is his true home, his family, his rest?"

Any clearer? Check out the trailer ... Oh, and it co-stars Kylie Minogue!