By Chiara Fiorillo & Chiara Fiorillo & Jamie Roberts Dakota Johnson, the star of “Shades of Grey”, cheekily dubbed Taylor Swift as the “most powerful person in America” during her stint on Saturday Night Live. She used this opportunity to tease Donald Trump, the former US president and current presidential candidate. While reminiscing about the last time she hosted the show for its 40th Anniversary Special in 2015, Dakota showed a photo of herself surrounded by VIPs like Sarah Palin, George Lucas, and Steven Spielberg. Pointing at Trump, who was also in the audience, she said: “And look who’s …