Mariah Carey is challenging Ravyn Lenae to chase her dreams. “You’re going to have to get after these things. C’mon, girl,” she says with a giggle, after Lenae shares admiration for women who have created a legacy, like Carey and Kelly Rowland, in the music industry. Carey, Rowland, and Lenae met up at the Four Seasons Hotel Los Angeles at Beverly Hills for Three Generations of R&B , ELLE’s new series that brings women together for cross-generational conversations. Carey, who is a true legend