Musician and interior designer Lenny Kravitz has big plans to expand his brand Kravitz Design into a Ralph Lauren-size empire. He tells Alina Cho’s CNN show “Fashion: Backstage Pass” from Paris, airing tomorrow at 2:30 p.m., “The plan is to make it a lifestyle brand . . . my dream for this company. In the same way you would see Ralph Lauren or Giorgio Armani.” He said it would include furniture, bedding and clothing. He also plans to open an eco-resort on a farm he owns in Brazil next year.