The actress showed off her new look during an outing in Rome.Dakota Johnson in 2025.Credit: Getty ImagesThe GistDakota Johnson ditched her signature brown hair for a much lighter hue.On April 18, the 36-year-old actress was spotted in Rome, Italy, with light brown hair, which was lightened even further with subtle blonde highlights.She paired the look with a slinky satin slip dress by Hai.Dakota Johnson just ditched her signature brunette locks …