Ben & KateMiranda Penn Turin/FOX

The comedy Ben & Kate premieres tonight at 8:30 p.m. EST on FOX! InStyle.com sat down with its star, Dakota Johnson—daughter of Hollywood royalty Melanie Griffith and Don Johnson—to dish about her style, on and off screen, and her famous family. On the show, Johnson play a tightly wound single mom whose free-spirited brother Ben (Nat Faxon) moves in to help raise her 5-year-old daughter, Maddie, creating some super-funny friction. In real life, Johnson is no stranger to sibling rivalry. Click through the gallery to learn all about Dakota Johnson and her character.

— Angela Salazar